List of tunnels by length
Encyclopedia
The longest large tunnels in the world have been constructed for water distribution, followed by tunnels for railways. Both uses are highly sensitive to gradients.

World's longest tunnels (in use)

Name Location Length Type Year Comment
Delaware Aqueduct
Delaware Aqueduct
The Delaware Aqueduct is the newest of the New York City aqueducts. It takes water from the Rondout Reservoir through the Chelsea Pump Station, the West Branch Reservoir, and the Kensico Reservoir, ending at the Hillview Reservoir in Yonkers, New York....

  New York state
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

137000 m (85.1 mi) Water supply 1945 New York City's main water supply tunnel, drilled through solid rock
Päijänne Water Tunnel
Päijänne Water Tunnel
The Päijänne Water Tunnel , located in Southern Finland, is the world's second longest continuous rock tunnel . It is long and runs 30–100 meters under the surface in bedrock...

  Southern Finland
Southern Finland
Southern Finland was a province of Finland from 1997 to 2010. It bordered the provinces of Western Finland and Eastern Finland. It also bordered the Gulf of Finland and Russia.- History :...

, Finland
Finland
Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

120000 m (74.6 mi) Water supply 1982 16 m2 cross section
Dahuofang Water Tunnel   Liaoning Province, China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

85320 m (53 mi) Water supply 2009 8 m in diameter
Orange–Fish River Tunnel
Orange–Fish River Tunnel
The Orange–Fish River Tunnel is an 82.8 km irrigation tunnel in South Africa which diverts water from the Orange River under the Suurberg mountain plateau to the Great Fish River and the semi-arid areas of Eastern Cape province....

  South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

82800 m (51.4 mi) Water supply 1972 longest continuous enclosed aqueduct in the southern hemisphere (22.5 m2 cross section)
Bolmen Water Tunnel
Bolmen Water Tunnel
The Bolmen Water Tunnel is a water supply tunnel, long. It goes from the lake Bolmen in Kronoberg County to the province of Scania, all in Sweden, and it serves around 700,000 people with drinking water. It has a cross section area of 8 m², a diameter of almost 3 metres. About 2 m³/s is...

  Kronoberg/Scania
Scania
Scania is the southernmost of the 25 traditional non-administrative provinces of Sweden, constituting a peninsula on the southern tip of the Scandinavian peninsula, and some adjacent islands. The modern administrative subdivision Skåne County is almost, but not totally, congruent with the...

, Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

82000 m (51 mi) Water supply 1987 8 m2
Seikan Tunnel
Seikan Tunnel
The Seikan Tunnel is a railway tunnel in Japan, with a long portion under the seabed. Track level is about below seabed and below sea level. It travels beneath the Tsugaru Strait—connecting Aomori Prefecture on the Japanese island of Honshu and the island of Hokkaido—as part of the Kaikyo Line...

  Tsugaru Strait
Tsugaru Strait
is a channel between Honshu and Hokkaido in northern Japan connecting the Sea of Japan with the Pacific Ocean. It was named after the western part of Aomori Prefecture...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

53850 m (33.5 mi) Railway 1988 longest railway tunnel, 74 m2
Želivka Water Tunnel
Želivka Water Tunnel
In 1965, the first phase of construction of a water supply line from Želivka began far away from Prague. Soon, a 51 kilometres long tunnel was being cut to bring clean water from the treatment plant in Nesměřice to Jesenice...

  Central Bohemian Region
Central Bohemian Region
Central Bohemian Region is an administrative unit of the Czech Republic, located in the central part of its historical region of Bohemia. Its administrative center is placed in the Czech capital Prague , which lies in the center of the region...

, Czech Republic
Czech Republic
The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

51075 m (31.7 mi) Water supply 1972 5 m2
Channel Tunnel
Channel Tunnel
The Channel Tunnel is a undersea rail tunnel linking Folkestone, Kent in the United Kingdom with Coquelles, Pas-de-Calais near Calais in northern France beneath the English Channel at the Strait of Dover. At its lowest point, it is deep...

    English Channel
English Channel
The English Channel , often referred to simply as the Channel, is an arm of the Atlantic Ocean that separates southern England from northern France, and joins the North Sea to the Atlantic. It is about long and varies in width from at its widest to in the Strait of Dover...

, United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

/France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

50450 m (31.3 mi) Railway 1994 longest underwater section, longest international tunnel, second-longest railway tunnel (2×45 m2 + 1×18 m2)
Seoul Subway
Seoul Metropolitan Subway
The Seoul Metropolitan Subway or Metropolitan Subway in Seoul, in Seoul, South Korea, is one of the most heavily used rapid transit systems in the world, with well over 8 million trips daily on the system's thirteen lines...

: Line 5
Seoul Subway Line 5
Seoul Subway Line 5 of the Seoul Metropolitan Rapid Transit Corporation, dubbed the purple line, is a long line crossing from the west to the east across the Seoul National Capital Area, South Korea...

  Seoul
Seoul
Seoul , officially the Seoul Special City, is the capital and largest metropolis of South Korea. A megacity with a population of over 10 million, it is the largest city proper in the OECD developed world...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

47600 m (29.6 mi) Metro 1995 longest metro/rapid transit tunnel
Altufyevo - Bulvar Dmitriya Donskogo
Bulvar Dmitriya Donskogo
Bulvar Dmitriya Donskogo is the southern terminus and the newest station of the Serpukhovsko-Timiryazevskaya Line of the Moscow Metro. It is the first station of the system built outside of the MKAD beltway encircling most of the city. The station opened on 26 December 2002...

 (line 9
Serpukhovsko-Timiryazevskaya Line
Serpukhovsko–Timiryazevskaya Line , sometimes colloquially referred to as Grey Line , is a line of the Moscow Metro. Originally opened in 1983, it was extended throughout the 1980s and early 90s and again in the early 2000s...

)
  Moscow Metro
Moscow Metro
The Moscow Metro is a rapid transit system serving Moscow and the neighbouring town of Krasnogorsk. Opened in 1935 with one line and 13 stations, it was the first underground railway system in the Soviet Union. As of 2011, the Moscow Metro has 182 stations and its route length is . The system is...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

41500 m (25.8 mi) Metro 1983–2002
Metro Madrid L-12
Line 12 (Madrid Metro)
Line 12, also known as MetroSur, is a line of the Madrid Metro. Opened on 11 April 2003, Line 12 is a circular line that is not in fact in Madrid, but links five suburban towns and one small village south of Madrid, serving around 1 million people. The towns linked by Line 12 are Alcorcón, Leganés,...

: (Metro Sur)
  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

40900 m (25.4 mi) Metro 1999–2003
Tocho-mae - Shiodome
Shiodome Station
Shiodome Station is a train station in Minato, Tokyo Prefecture, Japan. It serves as an interchange for the Toei Ōedo Line and Yurikamome...

 - Hikarigaoka
Hikarigaoka Station
is an underground railway station in Nerima, Tokyo, Japan. It is the terminus of the Toei Ōedo Line. The station number is E-38.-Platforms:The station has an island platform with two tracks. This platform is 11.9 m below ground level, the closest to the surface of all the Ōedo Line...

 (Toei Oedo Line
Toei Oedo Line
The is a subway line in Tokyo, Japan operated by the Tokyo Metropolitan Bureau of Transportation . It commenced full operations on December 12, 2000; using the Japanese calendar this reads "12/12/12" as the year 2000 equals Heisei 12...

)
  Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

40700 m (25.3 mi) Metro 1991–2000
Kárahnjúkar Hydroelectric Powerplant
Kárahnjúkar Hydropower Project
Kárahnjúkar Hydropower Plant is a hydroelectric power plant in eastern Iceland designed to produce 4,600 GWh annually for Alcoa's Fjardaál aluminum smelter to the east in Reyðarfjörður. The project, named after nearby Mount Kárahnjúkur, involves damming the Jökulsá á Dal River and the Jökulsá...

  Austurland
Austurland
Austurland is a region in eastern Iceland. Its area is 22,721 km² and its population is 15,300. The biggest town in the region is Egilsstaðir, with a population of 2300. The oldest municipality in the Eastfjords is Seydisfjörðr municipality established 1895, with population of 706 the year...

, Iceland
Iceland
Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

39700 m (24.7 mi) Hydroelectric 2003–2007 7.2-7.6 meters in diameter. Part of a wider complex of tunnels that are 72 kilometers in length combined
Quabbin Aqueduct
Quabbin Aqueduct
The Quabbin Aqueduct carries water from the Quabbin Reservoir to the Wachusett Reservoir. It is part of the Eastern Massachusetts public water supply system, maintained by the Massachusetts Water Resources Authority...

  Massachusetts
Massachusetts
The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

39600 m (24.6 mi) Water supply 1897–1905
Medvedkovo - Novoyasenevskaya (line 6
Kaluzhsko-Rizhskaya Line
The Kaluzhsko–Rizhskaya Line is a line of the Moscow Metro, that originally existed as two separate radial lines, Rizhskaya and Kaluzhskaya opened in 1958 and 1962, respectively. Only in 1971 were they united into a single line as the central section connecting the stations Oktyabrskaya to Prospekt...

)
  Moscow Metro
Moscow Metro
The Moscow Metro is a rapid transit system serving Moscow and the neighbouring town of Krasnogorsk. Opened in 1935 with one line and 13 stations, it was the first underground railway system in the Soviet Union. As of 2011, the Moscow Metro has 182 stations and its route length is . The system is...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

37600 m (23.4 mi) Metro 1958–1990
Lötschberg Base Tunnel
Lötschberg Base Tunnel
The Lötschberg Base Tunnel is a railway tunnel on the BLS Lötschbergbahn's Lötschberg Line cutting through the Alps of Switzerland some below the existing Lötschberg Tunnel. It is currently the world's longest land tunnel and accommodates passenger and freight trains. It runs between Frutigen,...

  Bernese Alps
Bernese Alps
The Bernese Alps are a group of mountain ranges in the western part of the Alps, in Switzerland. Although the name suggests that they are located in the Bernese Oberland region of the canton of Bern, portions of the Bernese Alps are in the adjacent cantons of Valais, Lucerne, Obwalden, Fribourg and...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

34577 m (21.5 mi) Railway 2007 longest land tunnel, single track along 22 km
Metro Madrid L-7
Line 7 (Madrid Metro)
Line 7 of the Madrid Metro originally opened on 17 July 1974 between Pueblo Nuevo and Las Musas. On 17 May 1975, the line was extended from Pueblo Nuevo to Avenida de América and for many years, this remained the length of Line 7. This was a problem as line 7 was very scarcely used. This was solved...

: Hospital del Henares - Pitis
  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

32919 m (20.5 mi) Metro 1974–2007
Rathaus Spandau-Rudow
Rudow (Berlin U-Bahn)
Rudow is a Berlin U-Bahn station located on the . There is a bus link to Schönefeld Airport from here.Opened in 1972 by architect Rümmler it is the end station of the U7 line. Storage sidings for subway trains at the southern end measure about 350m. The next is Zwickauer Damm .- References :...

 (U7)
  Berlin U-Bahn
Berlin U-Bahn
The Berlin is a rapid transit railway in Berlin, the capital city of Germany, and is a major part of the public transport system of that city. Opened in 1902, the serves 173 stations spread across ten lines, with a total track length of , about 80% of which is underground...

, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

31800 m (19.8 mi) Metro 1924–1984
Côte-Vertu
Côte-Vertu (Montreal Metro)
Côte-Vertu is a station on the Orange Line of the Montreal Metro rapid transit system, operated by the Société de transport de Montréal . It is located in the borough of Saint-Laurent in Montreal, Quebec, Canada ....

 - Montmorency
Montmorency (Montreal Metro)
Montmorency is a station on the Orange Line of the Montreal Metro rapid transit system, operated by the Société de transport de Montréal . It is located in the Laval-des-Rapides area of Laval, Quebec, Canada . The station is part of an extension to the line to Laval and opened on April 28, 2007,...

 (Line 2 Orange
Line 2 Orange (Montreal Metro)
The Orange line is the longest, most congested, and first-planned of the four lines of the Montreal Metro, in Montreal, Canada. It formed part of the initial network, and was extended between 1980 and 1986...

)
  Montreal Metro
Montreal Metro
The Montreal Metro is a rubber-tired metro system, and the main form of public transportation underground in the city of Montreal, Quebec, Canada....

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

30798 m (19.1 mi) Metro 1966–2007
Parnas - Kupchino (line 2
Moskovsko-Petrogradskaya Line
The Moskovsko-Petrogradskaya Line , is the second oldest line of the Saint Petersburg Metro, opened in 1961. It featured the first cross-platform transfer in the USSR...

)
  Saint Petersburg Metro
Saint Petersburg Metro
The Saint Petersburg Metro is the underground railway system in Saint Petersburg and Leningrad Oblast, Russia. It has been open since November 15, 1955.Formerly known as the V.I...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

30100 m (18.7 mi) Metro 1961–2006
Prospekt Veteranov
Prospekt Veteranov (Saint Petersburg Metro)
Prospekt Veteranov is a station on the south end of Kirovsko-Vyborgskaya Line of the Saint Petersburg Metro, next to Leninsky Prospekt.The station was opened on September 29, 1977 along with Leninsky Prospekt. It is located near the beginning of the street of the same name.This station has no...

 - Devyatkino (line 1
Kirovsko-Vyborgskaya Line
Kirovsko-Vyborgskaya Line is the oldest line of the Saint Petersburg Metro, opened in 1955. The original stations are very beautiful and elaborately decorated, especially Avtovo and Narvskaya. The line connects four out of five Saint Petersburg's main railway stations...

)
  Saint Petersburg Metro
Saint Petersburg Metro
The Saint Petersburg Metro is the underground railway system in Saint Petersburg and Leningrad Oblast, Russia. It has been open since November 15, 1955.Formerly known as the V.I...

, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

29600 m (18.4 mi) Metro 1955–1978
Guadarrama Tunnel
Guadarrama Tunnel
The Guadarrama Tunnel is a railway tunnel across the Sierra de Guadarrama, along the high speed route Madrid–Valladolid in Spain.The tunnel has two tubes. The western tube is 28,407 m long and the eastern tube 28,418 m long, and it is the longest tunnel in Spain . The tunnel was opened for traffic...

  Sierra de Guadarrama
Sierra de Guadarrama
The Sierra de Guadarrama is a mountain range forming the main eastern section of the Sistema Central, the system of mountain ranges at the centre of the Iberian Peninsula. It is located between the Sierra de Gredos in the province of Ávila, and Sierra de Ayllón in the province of Guadalajara...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

28377 m (17.6 mi) Railway 2007
Taihang Tunnel
Taihang Tunnel
Taihang Tunnel is currently the longest mountain railway tunnel in China. It is a double track tunnel, and was built to allow the Shitai Passenger Railway to cross the Taihang Mountains. The left track is 27,839 metres long and the right one is 27,848 metres long...

  Taihang Mountains
Taihang Mountains
The Taihang Mountains are a Chinese mountain range running down the eastern edge of the Loess Plateau in Henan, Shanxi and Hebei provinces. The range extends over 400 km from north to south and has an average elevation of 1,500 to 2,000 meters. The principal peak is Xiao Wutaishan...

, China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

27848 m (17.3 mi) Railway 2008 on Shijiazhuang
Shijiazhuang
Shijiazhuang is the capital and largest city of North China's Hebei province. Administratively a prefecture-level city, it is about south of Beijing...

-Taiyuan
Taiyuan
Taiyuan is the capital and largest city of Shanxi province in North China. At the 2010 census, it had a total population of 4,201,591 inhabitants on 6959 km² whom 3,212,500 are urban on 1,460 km². The name of the city literally means "Great Plains", referring to the location where the Fen River...

 high-speed railway
Morden
Morden tube station
Morden is a London Underground station in Morden in the London Borough of Merton. The station is the southern terminus for the Northern line and is the most southerly station on the Underground network. The next station north is...

 - East Finchley
East Finchley tube station
East Finchley is a London Underground station in East Finchley in north London. The station is on the High Barnet branch of the Northern Line, between Highgate and Finchley Central stations, and is in Travelcard Zone 3.-History:...

 (Northern Line
Northern Line
The Northern line is a London Underground line. It is coloured black on the Tube map.For most of its length it is a deep-level tube line. The line carries 206,734,000 passengers per year. This is the highest number of any line on the London Underground system, but the Northern line is unique in...

)
  London Underground
London Underground
The London Underground is a rapid transit system serving a large part of Greater London and some parts of Buckinghamshire, Hertfordshire and Essex in England...

, England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

27800 m (17.3 mi) Metro 1890–1940
Dainichi
Dainichi Station
is a train station on the Osaka Municipal Subway Tanimachi Line and Osaka Monorail located in Moriguchi, Osaka, Japan.-Lines:*Osaka Municipal Subway Tanimachi Line *Osaka Monorail Main Line -History:...

-Nagahara
Nagahara Station (Osaka)
is a train station on the Osaka Municipal Subway Tanimachi Line located in Hirano-ku, Osaka, Japan.-Layout:There is an island platform with two tracks underground.-Stations next to Nagahara:...

 (Tanimachi Line)
  Osaka Municipal Subway
Osaka Municipal Subway
is the metro network in the city of Osaka, Japan, forming an integral part of the extensive mass transit system of Greater Osaka , having 125 out of the 1,108 rail stations in the Osaka-Kobe-Kyoto region. In 2010 the greater Osaka region had 13 million rail passengers daily of which the Osaka...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

27100 m (16.8 mi) Metro 1967–1983
LEP Tunnel
Large Electron-Positron Collider
The Large Electron–Positron Collider was one of the largest particle accelerators ever constructed.It was built at CERN, a multi-national centre for research in nuclear and particle physics near Geneva, Switzerland. LEP was a circular collider with a circumference of 27 kilometres built in a...

    CERN
CERN
The European Organization for Nuclear Research , known as CERN , is an international organization whose purpose is to operate the world's largest particle physics laboratory, which is situated in the northwest suburbs of Geneva on the Franco–Swiss border...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

/France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

26659 m (16.6 mi) Particle accelerator 1989 11.3–15.9 m2 circular ring, now used by Large Hadron Collider
Large Hadron Collider
The Large Hadron Collider is the world's largest and highest-energy particle accelerator. It is expected to address some of the most fundamental questions of physics, advancing the understanding of the deepest laws of nature....

Hakkōda Tunnel
Hakkoda Tunnel
The is a railway tunnel in located in central Aomori Prefecture, in northern Japan. It passes through the Hakkōda mountain range and links the village of Tenmabayashi with the city of Aomori....

(Tōhoku Shinkansen
Tohoku Shinkansen
The is a Japanese high-speed Shinkansen rail line, connecting Tokyo with Aomori in Aomori Prefecture for a total length of 674 km, Japan's longest Shinkansen line. It runs through the more sparsely populated Tōhoku region of Japan's main island Honshu. It has two spur lines, Yamagata...

)
  Hakkōda Mountains, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

26455 m (16.4 mi) Railway 2010 64–74 m2
Kanayama
Kanayama Station (Aichi)
is a train station partly in Naka-ku, and partly in Atsuta-ku, Nagoya, Aichi Prefecture, Japan. This station is a concentrated terminal of JR Central, Meitetsu and Nagoya Municipal Subway...

-Nagoya Dome-mae Yada
Nagoya Dome-mae Yada Station
is a train station in Higashi-ku, Nagoya, Aichi Prefecture, Japan.It provides access to Nagoya Dome, where baseball games and various other large public events are held in Nagoya.-Lines:*Nagoya Municipal Subway**Meijō Line...

-Kanayama (Meijo Line
Meijo Line
The is a subway line, part of the system in Nagoya, Japan. It is a loop line that runs from Kanayama, through Sakae, Ōzone, Nagoya Daigaku, and back to Kanayama, all within Nagoya. The Meijō Line's color on maps is wisteria purple. Its stations carry the letter M followed by a number. Officially,...

)
  Nagoya Municipal Subway
Nagoya Municipal Subway
is the subway system that serves the Nagoya, Aichi, Japan area. Like other large Japanese cities, Greater Nagoya's subways are heavily complemented by suburban rail, forming an extensive network of 47 lines rivaling cities such as New York and London...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

26400 m (16.4 mi) Metro 1965–2004
Şanlıurfa Irrigation Tunnels
Şanlıurfa Irrigation Tunnels
Şanlıurfa Irrigation tunnels is the name of a major irrigation tunnel constructed in connection with the Southeastern Anatolia Project, a multi-sector integrated regional development project of Turkey. The tunnels were commissioned by the State Hydraulic Works authority. The constructor was Eren...

  Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

26400 m (16.4 mi) Irrigation 2005
Gilgel Gibe II Power Station
Gilgel Gibe II Power Station
The Gilgel Gibe II Power Station is a hydroelectric power station on the Omo River in Ethiopia. The power station receives water from a tunnel entrance on the Gilgel Gibe River. It has an installed capacity of 420 MW and was inaugurated on January 14, 2010...

 headrace tunnel
  Ethiopia
Ethiopia
Ethiopia , officially known as the Federal Democratic Republic of Ethiopia, is a country located in the Horn of Africa. It is the second-most populous nation in Africa, with over 82 million inhabitants, and the tenth-largest by area, occupying 1,100,000 km2...

26000 m (16.2 mi) Hydroelectric 2005–2009 Tunnel partially collapsed, under repair until November 2010.
Iwate-Ichinohe Tunnel
Iwate-Ichinohe Tunnel
The is a 25.810 km terrestrial railway tunnel in Japan — part of the Tōhoku Shinkansen, linking Tokyo with Aomori. When opened in 2002 it was the longest in-use terrestrial tunnel in world, but the title was overtaken by the Lötschberg Base Tunnel in June 2007.The tunnel is located...

  Ōu Mountains
Ou Mountains
The are a mountain range in the Tōhoku region of Honshū, Japan. The range is the longest range in Japan and stretch south from the Natsudomari Peninsula of Aomori Prefecture to the Nasu volcanoes at the northern boundary of the Kantō region. Though long, the range is only about wide...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

25810 m (16 mi) Railway 2002
Lærdal Tunnel   Lærdal
Lærdal
Lærdal is a municipality in the southwestern part of Sogn og Fjordane county, Norway. It is part of the traditional district of Sogn. The administrative center of the municipality is the village of Lærdalsøyri...

 - Aurland
Aurland
Aurland is a municipality in the county of Sogn og Fjordane, Norway. It is located in the traditional district of Sogn. The administrative center is the village of Aurlandsvangen. Other villages include Bakka, Flåm, Undredal, and Gudvangen....

, Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

24510 m (15.2 mi) Road
Road
A road is a thoroughfare, route, or way on land between two places, which typically has been paved or otherwise improved to allow travel by some conveyance, including a horse, cart, or motor vehicle. Roads consist of one, or sometimes two, roadways each with one or more lanes and also any...

2000 the longest road tunnel in the world
Yellow Line (Delhi Metro): GTB Nagar
GTB Nagar (Delhi Metro)
The GTB Nagar Metro Station is located on the Yellow Line of the Delhi Metro in Guru Teg Bahadur Nagar ....

 - Qutub Minar
  Delhi
Delhi
Delhi , officially National Capital Territory of Delhi , is the largest metropolis by area and the second-largest by population in India, next to Mumbai. It is the eighth largest metropolis in the world by population with 16,753,265 inhabitants in the Territory at the 2011 Census...

, India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

24000 m (14.9 mi) Metro 2004–2010 longest metro tunnel in India
Metro Madrid L-1
Line 1 (Madrid Metro)
Line 1 of the Madrid Metro was opened on 17 September 1919 between Cuatro Caminos and Sol. It was extended from Sol to Atocha in 1921, Atocha to Puente de Vallecas in 1923, Cuatro Caminos to Tetuán in 1929, Tetuán to Plaza De Castilla in 1961 and Puente de Vallecas to Portazgo in 1962.Between 1964...

: Valdecarros
Valdecarros
Valdecarros is a municipality located in the province of Salamanca, Castile and León, Spain. According to the 2004 census , the municipality has a population of 410 inhabitants....

 - Pinar de Chamartín
  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

23876 m (14.8 mi) Metro
Metro Madrid L-6
Line 6 (Madrid Metro)
Line 6 of the Madrid Metro opened originally between Cuatro Caminos and Pacifico in 1979. This is one of two circular lines in Madrid, but unlike Line 12, it did not open as a full circle...

: Circular
Circular
Circular is a basic geometric shape such as a Circle.Circular may also refer to:-Documents:*Circular note, a document request by a bank to its foreign correspondents to pay a specified sum of money to a named person...

  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

23472 m (14.6 mi) Metro 1979–2007
Angrignon
Angrignon (Montreal Metro)
Angrignon is a station on the Green Line of the Montreal Metro rapid transit system operated by the Société de transport de Montréal . It is located in the borough of Le Sud-Ouest in Montreal, Quebec, Canada...

 - Honoré-Beaugrand
Honoré-Beaugrand (Montreal Metro)
Honoré-Beaugrand is a station, the eastern terminus of the Green Line of the Montreal Metro rapid transit system operated by the Société de transport de Montréal...

 (Line 1 Green
Line 1 Green (Montreal Metro)
The Green line is one of the four lines of the metro in Montreal, Quebec, Canada. The line runs through the commercial section of downtown Montreal underneath Boulevard de Maisonneuve, formerly Rue de Montigny...

)
  Montreal Metro
Montreal Metro
The Montreal Metro is a rubber-tired metro system, and the main form of public transportation underground in the city of Montreal, Quebec, Canada....

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

23262 m (14.5 mi) Metro 1966–2007
Warsaw Metro L-1
Warsaw Metro
The Warsaw Metro is a rapid transit system serving the city of Warsaw, the capital of Poland. It consists of a single north-south line that links central Warsaw with its densely populated northern and southern suburbs. The first section was opened in 1995, then gradually extended until it...

: Kabaty
Kabaty (Warsaw Metro)
Metro Kabaty is at the southern end of Line 1 of the metro. It is close to the metro train depot and a Tesco supermarket. Kabaty station is situated at the southern end of Al. KEN....

 - Młociny
  Warsaw
Warsaw
Warsaw is the capital and largest city of Poland. It is located on the Vistula River, roughly from the Baltic Sea and from the Carpathian Mountains. Its population in 2010 was estimated at 1,716,855 residents with a greater metropolitan area of 2,631,902 residents, making Warsaw the 10th most...

, Poland
Poland
Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

23100 m (14.4 mi) Metro 1983–2008
Daishimizu Tunnel
Daishimizu Tunnel
The is a railway tunnel on the Jōetsu Shinkansen on the border of Gunma Prefecture and Niigata Prefecture, Japan.In 1978, the Dai-Shimizu tunnel was completed. This tunnel was dug for the Jōetsu Shinkansen that was to be completed in 1982. This tunnel was the world's longest tunnel at 22,200 m...

  Mount Tanigawa
Mount Tanigawa
is a 1977m mountain on the border of Gunma Prefecture and Niigata Prefecture in Japan.It is one of the 100 famous mountains in Japan.To date, since its initial exploration and route-finding in the early 1930s, a total of 781 people have died on Tanigawadake. is a 1977m mountain on the border of...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

22221 m (13.8 mi) Railway 1982
Wushaoling Tunnel
Wushaoling Tunnel
The Wushaoling Tunnel is a 21.05 km dual-bore railway tunnel in Gansu, north-west China. The east-bound bore opened on 30 March 2006. The west-bound bore is expected to open in October 2006...

  Wuwei, China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

21050 m (13.1 mi) Railway 2006 second tube opened in 2007
Barcelona Metro line 1
Barcelona Metro line 1
— Line 1, shortened to L1 and known as "Hospital de Bellvitge - Fondo", coloured red and often simply called Línia vermella , is the second oldest metro line in Barcelona, after L3. It is operated by Transports Metropolitans de Barcelona . It appeared as a means to join the rail stations the city...

  Barcelona
Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

20700 m (12.9 mi) Metro 1926–1992
Geumjeong Tunnel   Busan
Busan
Busan , formerly spelled Pusan is South Korea's second largest metropolis after Seoul, with a population of around 3.6 million. The Metropolitan area population is 4,399,515 as of 2010. It is the largest port city in South Korea and the fifth largest port in the world...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

20323 m (12.6 mi) Railway 2010 Gyeongbu High Speed Railway
The London Connection   London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

, United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

20000 m (12.4 mi) Electric power transmission
Electric power transmission
Electric-power transmission is the bulk transfer of electrical energy, from generating power plants to Electrical substations located near demand centers...

 tunnel
2005 National Grid plc
National Grid plc
National Grid plc is a multinational electricity and gas utility company headquartered in London, United Kingdom. Its principal activities are in the United Kingdom and northeastern United States and it is one of the largest investor-owned energy companies in the world.National Grid is listed on...

, 3-metre diameter, 400 kilovolt circuit, overhead monorail
Monorail
A monorail is a rail-based transportation system based on a single rail, which acts as its sole support and its guideway. The term is also used variously to describe the beam of the system, or the vehicles traveling on such a beam or track...

Simplon Tunnel
Simplon Tunnel
The Simplon Tunnel is an Alpine railway tunnel that connects the Swiss town of Brig with Domodossola in Italy, though its relatively straight trajectory does not run under Simplon Pass itself. It actually consists of two single-track tunnels built nearly 20 years apart...

    Lepontine Alps
Lepontine Alps
The Lepontine Alps are a mountain range in the central part of the Alps. They are located in Switzerland and Italy .On the north the upper Rhône valley separate them from the Bernese Alps and the Furka Pass and the upper Reuss valley separates them from the Urner Alps; on the west the Simplon Pass...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

/Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

19803 m (12.3 mi) Railway 1906 a parallel tunnel was opened in 1922 (19,824 m long)
Vereina
Vereina Tunnel
The Vereina Tunnel is a railway tunnel situated in eastern Switzerland, which at 19,058 m is the longest tunnel on the Swiss RhB railway network as well as the world's longest metre gauge railway tunnel...

  Silvretta
Silvretta
The Silvretta Alps are a mountain range of the Central Eastern Alps shared by Tirol, Vorarlberg and Graubünden . The Austrian states of Tirol and Vorarlberg are connected by a pass road . The majority of the peaks are elevated above three thousand metres and are surrounded by glaciers...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

19058 m (11.8 mi) Railway 1999 single track with passing loops, metre gauge
Shin Kanmon
Kanmon Tunnel
The Kanmon Railway Tunnel, Kanmon Roadway Tunnel, and Shin-Kanmon Tunnel are undersea tunnels crossing the Kanmon Straits between Shimonoseki, Yamaguchi and Kitakyūshū, Fukuoka in western Japan...

  Kanmon Straits
Kanmon Straits
The Kanmon Straits or the Straits of Shimonoseki is the stretch of water separating two of Japan's four main islands. On the Honshū side of the water is Shimonoseki and on the Kyūshū side is Kitakyūshū, whose former city and present ward, Moji , gave the strait its "mon"...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

18713 m (11.6 mi) Railway 1975
Vaglia
Vaglia
Vaglia is a comune in the Province of Florence in the Italian region Tuscany, located about 15 km north of Florence.It is home to Villa Demidoff, housing the remains of the Villa Medici di Pratolino. The communal territory also includes the Sanctuary of Montesenario, one of the most important...

  Bologna
Bologna
Bologna is the capital city of Emilia-Romagna, in the Po Valley of Northern Italy. The city lies between the Po River and the Apennine Mountains, more specifically, between the Reno River and the Savena River. Bologna is a lively and cosmopolitan Italian college city, with spectacular history,...

 - Firenze
Florence
Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

18711 m (11.6 mi) Railway 2009 Bologna–Florence high-speed railway
Apennine Base Tunnel
Apennine Base Tunnel
The Apennine Base Tunnel is a railway tunnel 18.507 km, , long on the Direttissima line connecting Florence and Bologna, in central Italy. The tunnel was opened on 21 April 1934 shortening the rail connection by 35 km compared to the old railway line over the mountain range...

  Tuscan-Emilian Apennines, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

18507 m (11.5 mi) Railway 1934
Qinling I-II   Qin Mountains, China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

18457 m (11.5 mi) Railway 2002 Double track
Double track
A double track railway usually involves running one track in each direction, compared to a single track railway where trains in both directions share the same track.- Overview :...

 
Avtozavodskaya Line
Avtozavodskaya Line
Avtozavodskaya Line is a line of the Minsk Metro. The line opened in 1990 and crosses the city on a Northwest-Southeast axis. Currently it comprises 14 stations and 18.1 kilometres of track.-Timeline:-Transfers:-Rolling stock:...

  Minsk Metro
Minsk Metro
The Minsk Metro is a rapid-transit system that serves Minsk, the capital of Belarus. Opened in 1984, it presently consists of 2 lines and 25 stations totaling 30.3 kilometres...

, Belarus
Belarus
Belarus , officially the Republic of Belarus, is a landlocked country in Eastern Europe, bordered clockwise by Russia to the northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Its capital is Minsk; other major cities include Brest, Grodno , Gomel ,...

18100 m (11.2 mi) Metro 1990
Zhongnanshan
Zhongnanshan Tunnel
Zhongnanshan Tunnel, or Qinling Zhongnanshan Tunnel in Shaanxi province, China, is the longest two-tube road tunnel in the world. It is also the second longest road tunnel overall in the world, after the Lærdal Tunnel in Norway. The long tunnel, crosses under the Zhongnan Mountain...

  China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

18040 m (11.2 mi) Road 2007 the longest road tunnel in China
Kholodnohirsko–Zavodska Line   Kharkiv Metro
Kharkiv Metro
The Kharkiv Metro is the metro system that serves the city of Kharkiv , the second largest city in Ukraine. The metro was the second in Ukraine and the sixth in the USSR when it opened in 1975.-Lines and Stations:...

, Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...

17300 m (10.7 mi) Metro 1975
Kurenivsko-Chervonoarmiyska Line
Kurenivsko-Chervonoarmiyska Line
The Kurenivsko-Chervonoarmiyska Line , is the second line of the Kiev Metro, first opened in 1976, it extended northwards along the right bank of the Dnieper river and began deviating from the river towards the southwest. As the current stations were built in the 1970s and 80s, architecturally the...

  Kiev Metro
Kiev Metro
The Kiev Metro is a metro system that is the mainstay of Kiev's public transport. It was the first rapid transit system in Ukraine and the third one built in the USSR . It now has three lines with a total length of 63.7 kilometres and 49 stations...

, Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...

17000 m (10.6 mi) Metro 1976
Gotthard Road Tunnel
Gotthard Road Tunnel
The St. Gotthard Tunnel in Switzerland runs from Göschenen in the Canton of Uri at its northern portal, to Airolo in Ticino to the south, and is just under in length below the St. Gotthard Pass...

  Lepontine Alps
Lepontine Alps
The Lepontine Alps are a mountain range in the central part of the Alps. They are located in Switzerland and Italy .On the north the upper Rhône valley separate them from the Bernese Alps and the Furka Pass and the upper Reuss valley separates them from the Urner Alps; on the west the Simplon Pass...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

16918 m (10.5 mi) Road 1980
Barcelona Metro line 4
Barcelona Metro line 4
— Line 4, currently known as Trinitat Nova – La Pau, usually called "línia groga" , is a line in the Barcelona Metro network operated by TMB, and part of the ATM fare-integrated transport network...

  Barcelona
Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

16700 m (10.4 mi) Metro 1929–1999
Barcelona Metro line 3
Barcelona Metro line 3
— Line 3, currently known as Zona Universitària - Trinitat Nova, coloured green and often simply referred to as Línia verda , is a metro line in Barcelona operated by TMB, and therefore part of the fare-integrated ATM transport network of the urban region...

  Barcelona
Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

16600 m (10.3 mi) Metro 1924–2001
Barcelona Metro line 5
Barcelona Metro line 5
— Line 5, currently known as Cornellà Centre - Vall d'Hebron, its termini, and often simply called "Línia Blava" is line belonging to the Barcelona Metro network operated by TMB, and part of the ATM fare-integrated transport network....

  Barcelona
Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

16600 m (10.3 mi) Metro 1959–1983
Metro Madrid L-8
Line 8 (Madrid Metro)
Line 8 of the Madrid Metro opened between Mar de Cristal and Campo de las Naciones on 24 June 1998. An extension to Barajas via Madrid Airport was opened in 1999 and in 2002 an extension to Nuevos Ministerios and Colombia opened. Originally this line was a small-profile line, but in 2002 it became...

: Nuevos Ministerios - Aeropuerto
  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

16467 m (10.2 mi) Metro 1998–2007
Metro Madrid L-3
Line 3 (Madrid Metro)
Line 3 of the Madrid Metro was opened in August 1936 between Sol and Embajadores, a few days before the beginning of the Spanish Civil War. In 1941 it was extended from Sol to Argüelles, in 1949 from Embajadores to Delicias, in 1951 from Delicias to Legazpi, in 1963 from Argüelles to Moncloa, and...

: Moncloa - Villaverde Alto
  Madrid
Madrid
Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

16424 m (10.2 mi) Metro 1939–2007
Line 3 (Athens Metro)
Athens Metro
The Athens Metro is an underground rapid transit system serving Athens, the capital city of Greece. It was constructed and owned by Attiko Metro S.A. and operated until 2011 by Attiko Metro Etaireia Leitourgias S.A....

  Athens
Athens
Athens , is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, as its recorded history spans around 3,400 years. Classical Athens was a powerful city-state...

, Greece
Greece
Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

16400 m (10.2 mi) Metro 1991–2008 Line 3 is actually 39.6 km long, but only 16,4 km of it are underground.
Rokkô Tunnel   Mount Rokkō
Mount Rokko
is a name of a group of mountains in Hyōgo Prefecture, Japan. This mountain is one of Hyōgo 50 mountains, Kinki 100 mountains, and also one of the 300 famous mountains in Japan.- Outline :...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

16250 m (10.1 mi) Railway 1972
Henderson Tunnel   Front Range
Front Range
The Front Range is a mountain range of the Southern Rocky Mountains of North America located in the north-central portion of the U.S. State of Colorado and southeastern portion of the U.S. State of Wyoming. It is the first mountain range encountered moving west along the 40th parallel north across...

, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

15800 m (9.8 mi) Railway 1976 Narrow gauge railway, replaced by a conveyor belt
Conveyor belt
A conveyor belt consists of two or more pulleys, with a continuous loop of material - the conveyor belt - that rotates about them. One or both of the pulleys are powered, moving the belt and the material on the belt forward. The powered pulley is called the drive pulley while the unpowered pulley...

 in 1999. Only one portal (served an underground mine)
Furka Base   Urner Alps
Urner Alps
The Urner Alps are a mountain range in central Switzerland in the western part of the Alps. They extend into the cantons of Obwalden, Valais, Lucerne, Bern, Uri and Nidwalden and are bordered by the Bernese Alps to the west, the Lepontine Alps to the south and the Glarus Alps to the east.The Urner...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

15442 m (9.6 mi) Railway 1982 single track with passing loops, metre gauge
Haruna
Haruna, Gunma
Haruna was a town located in Takasaki City, Gunma, Japan.As of June 30, 2004, the town had an estimated population of 22,303 and a total area of 93.59 km².On October 1, 2006 Haruna was merged into the expanded Takasaki City .-Geography:...

  Gunma Prefecture
Gunma Prefecture
is a prefecture of Japan located in the northwest corner of the Kantō region on Honshu island. Its capital is Maebashi.- History :The remains of a Paleolithic man were found at Iwajuku, Gunma Prefecture, in the early 20th century and there is a public museum there.Japan was without horses until...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

15350 m (9.5 mi) Railway 1982
Severomuysky Tunnel
Severomuysky Tunnel
Severomuysky Tunnel is a railroad tunnel on the Baikal Amur Mainline , in northwestern Buryatia, Russia. It is named after the Severomuysky Range it cuts through....

  Severomuysky Range, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

15343 m (9.5 mi) Railway 2003
Firenzuola
Firenzuola
Firenzuola is a comune in the Province of Florence in the Italian region Tuscany, located about 40 km northeast of Florence....

  Bologna
Bologna
Bologna is the capital city of Emilia-Romagna, in the Po Valley of Northern Italy. The city lies between the Po River and the Apennine Mountains, more specifically, between the Reno River and the Savena River. Bologna is a lively and cosmopolitan Italian college city, with spectacular history,...

 - Firenze
Florence
Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

15285 m (9.5 mi) Railway 2009 Bologna–Florence high-speed railway
Gorigamine Tunnel   Takasaki - Nagano, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

15175 m (9.4 mi) Railway 1997
Monte Santomarco
Monte Santomarco Tunnel
Monte Santomarco is a tunnel in the Calabria region of Italy. It is 15,040 km long and has been opened in 1987. It has replaced a standard-gauge rack railway line....

  Paola
Paola, Italy
Paola is a town and comune in the province of Cosenza in the Calabria region of southern Italy.-Geography:The city borders with Montalto Uffugo and San Benedetto Ullano by the west, Fuscaldo by the north and San Lucido by the south.-History:...

 - Cosenza
Cosenza
Cosenza is a city in southern Italy, located at the confluence of two historic rivers: the Busento and the Crathis. The municipal population is of around 70,000; the urban area, however, counts over 260,000 inhabitants...

, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

15040 m (9.3 mi) Railway 1987
Gotthard Rail Tunnel
Gotthard Rail Tunnel
The Gotthard Rail Tunnel, is a 15-kilometre long railway tunnel and forms the summit of the Gotthard Railway in Switzerland. It connects Göschenen with Airolo and was the first tunnel through the Gotthard massif...

  Lepontine Alps
Lepontine Alps
The Lepontine Alps are a mountain range in the central part of the Alps. They are located in Switzerland and Italy .On the north the upper Rhône valley separate them from the Bernese Alps and the Furka Pass and the upper Reuss valley separates them from the Urner Alps; on the west the Simplon Pass...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

15003 m (9.3 mi) Railway 1882
Nakayama
Nakayama
Nakayama may refer to:*Nakayama, Ehime, a town in Ehime Prefecture*Nakayama, Tottori, a town in Tottori Prefecture*Nakayama, Yamagata, a town in Yamagata Prefecture*Nakayama-dera, a temple in Hyōgo Prefecture...

  Nakayama Pass, Honshū
Honshu
is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

14857 m (9.2 mi) Railway 1982
Mount Macdonald Tunnel
Mount Macdonald Tunnel
The Mount Macdonald Tunnel, located in the vicinity of Rogers Pass in the Selkirk Mountains of British Columbia, Canada, is a railway tunnel constructed through Mount Macdonald by the Canadian Pacific Railway ....

  Rogers Pass
Rogers Pass
Rogers Pass is a high mountain pass through the Selkirk Mountains of British Columbia used by the Canadian Pacific Railway and the Trans-Canada Highway. The pass is a shortcut across the "Big Bend" of the Columbia River from Revelstoke on the west to Donald, near Golden, on the east...

, Glacier National Park
Glacier National Park (Canada)
Glacier National Park is one of seven national parks in British Columbia, and is part of a system of 43 parks and park reserves across Canada. It protects a portion of the Columbia Mountains. It also contains the Rogers Pass National Historic Site, designated for its importance in the construction...

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

14723 m (9.1 mi) Railway 1989
Cuajone-El Sargento   Ilo-Toquepala / Cuajone Industrial Railroad - Southern Peru Copper Corporation, Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

14720 m (9.1 mi) Railway 1975
Lötschberg Tunnel
Lötschberg Tunnel
The Lötschberg Tunnel is a long railway tunnel on the Lötschberg Line, which connects Spiez and Brig at the northern end of the Simplon Tunnel cutting through the Alps of Switzerland. Its ends are at the towns of Kandersteg in the Canton of Berne and Goppenstein in the Canton of...

  Alps
Swiss Alps
The Swiss Alps are the portion of the Alps mountain range that lies within Switzerland. Because of their central position within the entire Alpine range, they are also known as the Central Alps....

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

14612 m (9.1 mi) Railway 1913
Romerike Tunnel   Oslo
Oslo
Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

 - Lillestrøm
Lillestrøm
' is a city in the municipality of Skedsmo, Akershus, Norway. The municipal administration is located in Lillestrøm.Facilities in Lillestrøm include hotels, Norway trade fairs, a brand new cinema, a mall, Lillestrøm torv, restaurants, a high speed commuter train that reaches both Oslo and...

, Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

14580 m (9.1 mi) Railway 1999
Tunnelbana 3 (Blue line), Kungsträdgården-Hjulsta
Stockholm Metro
The Stockholm Metro is a metro system in Stockholm, Sweden. The first line opened in 1950, and today the system has 100 stations in use, of which 47 are underground and 53 above ground. There are seven lines numbered from 10 to 19, in three groups identified by a color: the Green, Red and Blue lines...

  Stockholm
Stockholm
Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia. Stockholm is the most populous city in Sweden, with a population of 851,155 in the municipality , 1.37 million in the urban area , and around 2.1 million in the metropolitan area...

, Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

14300 m (8.9 mi) Metro 1975–1977
Dayaoshan   Nanling Mountains, China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

14294 m (8.9 mi) Railway 1987
Metro Lisbon - Blue (Seagull) Line
Lisbon Metro
The Lisbon Metro is the metro system of Lisbon, Portugal. Opened in December 1959, it was the first subway system in Portugal.As of 2011, the four Lisbon subway lines total about in length and comprise 52 stations.- History :- Idea :...

  Lisbon
Lisbon
Lisbon is the capital city and largest city of Portugal with a population of 545,245 within its administrative limits on a land area of . The urban area of Lisbon extends beyond the administrative city limits with a population of 3 million on an area of , making it the 9th most populous urban...

, Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

14000 m (8.7 mi) Metro 1959–2007
Arlberg Road Tunnel
Arlberg Road Tunnel
The Arlberg Road Tunnel with a length of 13,976 metres is Austria's longest road tunnel. It carries the S16 Arlbergschnellstraße under the Arlberg massif from Tyrol to Vorarlberg....

  Arlberg
Arlberg
Arlberg is a mountain range or massif between Vorarlberg and Tyrol in Austria.The highest peak is the "Valluga" at . The name Arlberg derives from the tradition of the "Arlenburg," who are said to have once established themselves on the Tyrolean side of the Arlberg passes . Another story derives...

, Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

13972 m (8.7 mi) Road 1978
Hokuriku Tunnel   Mount Kinome, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

13870 m (8.6 mi) Railway 1962
Fréjus
Fréjus Rail Tunnel
The Fréjus Rail Tunnel is a rail tunnel of length in the European Alps, carrying the Turin–Modane railway through Mount Cenis to an end on connection with the Culoz–Modane railway and linking Modane, France and Bardonecchia, Italy...

 (Mont Cenis
Mont Cenis
Mont Cenis is a massif and pass in Savoie in France which forms the limit between the Cottian and Graian Alps.A road over the pass was built between 1803 and 1810 by Napoleon...

)
    Alps
Alps
The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west....

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

/Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

13636 m (8.5 mi) Railway 1871
Shin Shimizu Tunnel
Shimizu Tunnel
is a railroad tunnel in Gunma and Niigata Prefectures of Japan, operated by JR East Jōetsu Line. The name originates from the Shimizu mountain pass nearby...

  Mount Tanigawa
Mount Tanigawa
is a 1977m mountain on the border of Gunma Prefecture and Niigata Prefecture in Japan.It is one of the 100 famous mountains in Japan.To date, since its initial exploration and route-finding in the early 1930s, a total of 781 people have died on Tanigawadake. is a 1977m mountain on the border of...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

13500 m (8.4 mi) Railway 1967
Savio Rail Tunnel
Savio Rail Tunnel
The Savio Rail Tunnel near to the capital city of Helsinki, Finland connects the Vuosaari Harbour with the Helsinki–Tampere main line in Kerava. The tunnel is single track, electrified and 13.5 kilometres long. Construction begun in 2004, and the tunnel opened in November 2008. The tunnel is part...

  Helsinki
Helsinki
Helsinki is the capital and largest city in Finland. It is in the region of Uusimaa, located in southern Finland, on the shore of the Gulf of Finland, an arm of the Baltic Sea. The population of the city of Helsinki is , making it by far the most populous municipality in Finland. Helsinki is...

 - Kerava
Kerava
Kerava is a town and municipality in Finland.It is located in the province of Southern Finland and is part of the Uusimaa region. The town has a population of and covers an area of of which is water. The population density is...

, Finland
Finland
Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

13500 m (8.4 mi) Railway 2008
Hex River Tunnel
Hex River Tunnel
The Hex River Tunnels, also known as Hexton, in the Western Cape Province of South Africa is a tunnel system consisting of four single track railway tunnels connecting De Doorns in the Hex River valley with Touws River in the Little Karoo....

  Hex River Pass
Hex River Pass
Hex River Pass, Is situated in the Western Cape, province of South Africa, on the National road N1 road between De Doorns and Touws River.-Be Aware:* Driving Skill level: Novice* Road Condition: Tarred surface, sweeping turns...

, South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

13400 m (8.3 mi) Railway 1989
Wonhyo Tunnel   Ulsan
Ulsan
Ulsan , officially the Ulsan Metropolitan City, is South Korea's seventh largest metropolis with a population of over 1.1 million. It is located in the south-east of the country, neighboring Busan to the south and facing Gyeongju to the north and the Sea of Japan to the east.Ulsan is the...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

13270 m (8.2 mi) Railway 2010 Gyeongbu High Speed Railway
Schlern Tunnel   South Tyrol
South Tyrol
South Tyrol , also known by its Italian name Alto Adige, is an autonomous province in northern Italy. It is one of the two autonomous provinces that make up the autonomous region of Trentino-Alto Adige/Südtirol. The province has an area of and a total population of more than 500,000 inhabitants...

, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

13159 m (8.2 mi) Railway 1993
Caponero-Capoverde   Genova
Génova
Génova may refer to:* Spanish spelling of the city of Genoa, Italy* Génova, Quindío, a municipality in the department of Quindío, Colombia* Génova, Quetzaltenango, a municipality in the department of Quetzaltenango, Guatemala...

 - Ventimiglia
Ventimiglia
Ventimiglia is a city and comune in Liguria, northern Italy, in the province of Imperia. It is located southwest of Genoa by rail, and 7 km from the French-Italian border, on the Gulf of Genoa, having a small harbour at the mouth of the Roia River, which divides the town into two parts...

, Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

13135 m (8.2 mi) Railway 2001 includes an underground station ("San Remo")
Barcelona Metro line 2
Barcelona Metro line 2
Line 2 is a metro line in Barcelona operated by TMB, coloured purple and sometimes simply called línia lila. It's part of the city's ATM fare-integrated transport network...

  Barcelona
Barcelona
Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

13100 m (8.1 mi) Metro 1985–1997
Aki
Aki
-Places in Japan:*Aki District, Hiroshima, a district in Hiroshima Prefecture*Aki, Kōchi, a city in Kochi Prefecture*Aki District, Kōchi, a district in Kochi Prefecture*Aki, Ōita, a town in Ōita Prefecture...

  Sanyo Shinkansen
Sanyō Shinkansen
The is a line of the Japanese Shinkansen high-speed rail network, connecting Shin-Ōsaka in Osaka with Hakata Station in Fukuoka, the two largest cities in western Japan...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

13030 m (8.1 mi) Railway 1975
Hsuehshan
Hsuehshan Tunnel
The Hsuehshan Tunnel or "Snow Mountain" tunnel, is the longest tunnel in Taiwan, located on the Taipei-Yilan Freeway . It opened on June 16, 2006.-Overview:...

  Taipei
Taipei
Taipei City is the capital of the Republic of China and the central city of the largest metropolitan area of Taiwan. Situated at the northern tip of the island, Taipei is located on the Tamsui River, and is about 25 km southwest of Keelung, its port on the Pacific Ocean...

 - Yilan, Taiwan
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

12942 m (8 mi) Road 2006
Many more tunnels exist that are shorter than 13 kilometres (8 mi)

Note that there are Metro/Subway/Underground/Rapid transit
Rapid transit
A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...

 railways that have tunnels that would be placed high on this list. The longest such tunnel is Seoul Subway Line 5
Seoul Subway Line 5
Seoul Subway Line 5 of the Seoul Metropolitan Rapid Transit Corporation, dubbed the purple line, is a long line crossing from the west to the east across the Seoul National Capital Area, South Korea...

 of Seoul Metro
Seoul Metro
Seoul Metro is a public corporation which runs the Seoul Subway Lines 1 to 4.From 1970 to 2006, it was called Seoul Metropolitan Subway Corporation.-Lines:- See also :* Korail* Seoul Metropolitan Rapid Transit Corporation...

, 52.4 km (32.6 mi) long. Often metro tunnels are not considered to be continuous, because the stations do not count as tunnels. See also List of long tunnels by type.

World's longest tunnels (under construction)

Name Location Length Type Year Comment
New York City Water Tunnel No. 3
New York City Water Tunnel No. 3
New York City Water Tunnel No. 3 is the largest capital construction project in New York state's history and among the most complex engineering projects in the world today. It is being constructed by the New York City Department of Environmental Protection , and is intended to provide the City with...

  New York State
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

96560 m (60 mi) Water 2020 More water supply for New York City. Already in use; at completion it will be the world's third longest tunnel
Gotthard Base Tunnel
Gotthard Base Tunnel
The Gotthard Base Tunnel is a new railway tunnel beneath the Swiss Alps, expected to open in 2016. With a route length of and a total of of tunnels, shafts and passages, it is the world's longest rail tunnel, surpassing the Japanese Seikan Tunnel....

  Lepontine Alps
Lepontine Alps
The Lepontine Alps are a mountain range in the central part of the Alps. They are located in Switzerland and Italy .On the north the upper Rhône valley separate them from the Bernese Alps and the Furka Pass and the upper Reuss valley separates them from the Urner Alps; on the west the Simplon Pass...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

57072 m (35.5 mi) or 57091 m (35.5 mi) Railway 2017 new Gotthard Railway
Gotthardbahn
Gotthardbahn was the name of a private Swiss railway company which operated the railway line from Immensee to Chiasso . Nowadays this term usually does not refer to that company, but to the railway line itself...

; at completion it will be the longest railway tunnel (breakthrough 2010-10-15)
Two tubes (East 57091 m (35.5 mi), West 56978 m (35.4 mi)), 8.8–9.5 m (29–31 ft) cross section
Koralm Tunnel
Koralm Tunnel
The Koralm Tunnel is a railway tunnel under construction in Austria under the Koralpe mountain range. It will be 32,9 km long and up to 1.250 m deep and be a part of the 130 km Koralmbahn linking Graz with Klagenfurt. The tunnel will be composed by two single track tubes linked every 500...

  Koralpe
Koralpe
The Koralpe, also referred to as Koralm, is a mountain range in southern Austria which separates eastern Carinthia from southern Styria. Running from north to south, it drains to the river Lavant in the west, and to the river Sulm in the east...

, Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

32900 m (20.4 mi) Railway 2020 boring of main tunnel started at the west portal May 2010
New Guanjiao Tunnel   Qinghai
Qinghai
Qinghai ; Oirat Mongolian: ; ; Salar:) is a province of the People's Republic of China, named after Qinghai Lake...

, China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

32605 m (20.3 mi) Railway 2012 longest tunnel on the upgraded dual-track Xining–Golmud section of Qinghai–Tibet Railway, longest railway tunnel in China, 3323.58–3380.97 meters above sea level
Lainzer/Wienerwaldtunnel
Wienerwaldtunnel
The Wienerwald Tunnel is a 13.35-kilometre-long railway tunnel under construction west of Vienna passing underneath the northern part of Wienerwald between Gablitz and Mauerbach. It is part of a new 250 kilometres per hour line between Vienna and St...

  west of Vienna
Vienna
Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

, Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

26000 m (16.2 mi) Railway 2012 breakthrough 2007-09-03
Melamchi
Melamchi
Melamchi is a village in Sindhupalchok District in the Bagmati Zone of central Nepal. At the time of the 1991 Nepal census it had a population of 3936 and had 710 houses in the village....

 Water supply Development Board
Melamchi
Melamchi
Melamchi is a village in Sindhupalchok District in the Bagmati Zone of central Nepal. At the time of the 1991 Nepal census it had a population of 3936 and had 710 houses in the village....

 to Kathmandu
26000 m (16.2 mi) Water Tunnel 2009-2014 Under construction, Financed by Asian Development Bank
Pajares Base Tunnel
Pajares Base Tunnel
The new Pajares Tunnel is a 24,667 m-long railway tunnel under construction in Spain. It will be on the AVE line from Valladolid to Gijón but could be used also by freight trains in the future....

  Principado de Asturias, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

24667 m (15.3 mi) Railway 2011
Iiyama Tunnel   Iiyama
Iiyama, Nagano
is a city located in Nagano, Japan. It markets itself as "Japan's Hometown".The city was founded on August 1, 1954. As of 2008, the city has an estimated population of 23,969 and the density of 118 persons per km². The total area is 202.32 km²...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

22225 m (13.8 mi) Railway 2013 being built for the Hokuriku Shinkansen
Hokuriku Shinkansen
The is a high-speed Shinkansen rail line under construction in Japan. The first section, between and , currently called the Nagano Shinkansen, opened on 1 October 1997.-Future:...

, breakthrough 2007
Mavi Tünel (Blue Tunnel)   Konya
Konya
Konya is a city in the Central Anatolia Region of Turkey. The metropolitan area in the entire Konya Province had a population of 1,036,027 as of 2010, making the city seventh most populous in Turkey.-Etymology:...

, Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

17000 m (10.6 mi) Water / Irrigation 2012 breakthrough 2007
Solan Tunnel   Dongbaeksan-Dongye, Gangwon-do
Gangwon-do (South Korea)
Gangwon-do is a province of South Korea, with its capital at Chuncheon. Before the division of Korea in 1945, Gangwon and its North Korean neighbour Kangwŏn formed a single province.-History:...

, Taebaek Line
Taebaek Line
Taebaek Line is a single-track electrified railway mainline connecting Jecheon Station to Baeksan Station in South Korea. At its two ends, the Taebaek Line connects to the Jungang Line and Yeongdong Line. The line was originally two spur lines, which were built across difficult mountainous terrain...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

16240 m (10.1 mi) Railway 2012 Includes a spiral; breakthrough 2006-12-07
Ceneri Base Tunnel
Ceneri Base Tunnel
The Ceneri Base Tunnel is a railway tunnel under construction in Switzerland's Canton Ticino. It will pass under Monte Ceneri between Camorino in the Magadino Flat and Vezia near Lugano...

  Lepontine Alps
Lepontine Alps
The Lepontine Alps are a mountain range in the central part of the Alps. They are located in Switzerland and Italy .On the north the upper Rhône valley separate them from the Bernese Alps and the Furka Pass and the upper Reuss valley separates them from the Urner Alps; on the west the Simplon Pass...

, Switzerland
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

15400 m (9.6 mi) Railway 2019 new Gotthard Railway
Gotthardbahn
Gotthardbahn was the name of a private Swiss railway company which operated the railway line from Immensee to Chiasso . Nowadays this term usually does not refer to that company, but to the railway line itself...

Marmaray   Istanbul
Istanbul
Istanbul , historically known as Byzantium and Constantinople , is the largest city of Turkey. Istanbul metropolitan province had 13.26 million people living in it as of December, 2010, which is 18% of Turkey's population and the 3rd largest metropolitan area in Europe after London and...

, Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

13600 m (8.5 mi) Railway 2013 built next to a fault zone, between two continents; breakthrough 2008-09-23
Possibly incomplete table. Many more tunnels are under construction that will be shorter than 13 kilometres (8 mi)

World's longest tunnels (advanced planning stage)

Name Location Length Type Year Comment
Brenner Base Tunnel
Brenner Base Tunnel
The Brenner Base Tunnel is a planned long railway tunnel through the base of the Brenner massif. It will run from Innsbruck Hauptbahnhof in Austria to Franzensfeste in Italy, replacing part of the current Brenner railway...

    Stubai Alps
Stubai Alps
The Stubai Alps is a mountain range in the Central Eastern Alps of Europe. It is named after the Stubaital valley to its east. It is located southwest of Innsbruck, Austria, and several summits of the range form part of Austria's border with Italy...

, Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

 – Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

56000 m (34.8 mi) Railway 2025 Planning stage, pilot tunnel under construction
Mont d'Ambin base tunnel
Mont d'Ambin base tunnel
The Mont d'Ambin base tunnel is the largest engineering work of the Lyon-Turin rail link project. Reconnaissance work began on the French side in 2002 with the excavation of access points at Modane, then Saint Martin la Porte and La Praz ....

    Cottian Alps
Cottian Alps
The Cottian Alps are a mountain range in the southwestern part of the Alps. They form the border between France and Italy...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 – Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

52000 m (32.3 mi) Railway 2020–2023 access shafts under construction
Gaoligongshan Tunnel   Yunnan
Yunnan
Yunnan is a province of the People's Republic of China, located in the far southwest of the country spanning approximately and with a population of 45.7 million . The capital of the province is Kunming. The province borders Burma, Laos, and Vietnam.Yunnan is situated in a mountainous area, with...

, China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

39600 m (24.6 mi) Railway 2017 Railway between Dali and Ruili
Musil Tunnel   Ulsan
Ulsan
Ulsan , officially the Ulsan Metropolitan City, is South Korea's seventh largest metropolis with a population of over 1.1 million. It is located in the south-east of the country, neighboring Busan to the south and facing Gyeongju to the north and the Sea of Japan to the east.Ulsan is the...

, South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

25080 m (15.6 mi) Railway 2018 Planning stage, on the Jungang Line
Jungang Line
The Jungang Line is a railway line connecting Cheongnyangni in Seoul to Gyeongju in South Korea, traversing central South Korea from the northwest to the southeast.-History:...

 (work slated to start June 2011)
Follo Line   Oslo
Oslo
Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

, Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

19000 m (11.8 mi) Railway 2018
Fehmarn Belt Fixed Link    Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

-Denmark
Denmark
Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

17600 m (10.9 mi) Road & Railway 2020 start of construction planned for 2014
Förbifart Stockholm
Förbifart Stockholm
Förbifart Stockholm is a controversial planned express highway between the E 4/E 20 at Kungens Kurva in the south of Stockholm and the E 4 at Häggvik north of Stockholm. Most of this bypass, more than 17 out of 21 kilometers, is planned to pass through underground tunnels...

  Stockholm
Stockholm
Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia. Stockholm is the most populous city in Sweden, with a population of 851,155 in the municipality , 1.37 million in the urban area , and around 2.1 million in the metropolitan area...

, Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

16000 m (9.9 mi) Road 2020 construction not started yet

See also

  • List of tunnels
  • List of long tunnels by type contains separate tables for rock, railroad, subway and vehicular tunnels.
  • List of bridges by length
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