K-52 is a state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in eastern Kansas

Kansas

Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...

. It is 22.4 mi (36 km) long. K-52 begins concurrent

Concurrency (road)

A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...

 with K-31 at U.S. Route 59 near Kincaid

Kincaid, Kansas

Kincaid is a city in Anderson County, Kansas, United States. As of the 2010 census, the city population was 122.-Geography:Kincaid is located at...

, and heads east toward Mound City

Mound City, Kansas

Mound City is a city in and the county seat of Linn County, Kansas, United States. As of the 2010 census, the city population was 694.-Geography:Mound City is located at...

, where it splits away from K-31. K-52 then overlaps U.S. Route 69 for 8 miles (12.9 km) through Pleasanton

Pleasanton, Kansas

Pleasanton is a city in Linn County, Kansas, United States. The population was 1,387 at the 2000 census. Named for General Alfred Pleasonton, the city was founded in 1869.-Geography:Pleasanton is located at ....

 and Trading Post

Trading Post, Kansas

Trading Post is an unincorporated community in Linn County, Kansas, United States, which is said to be one of the oldest continuously occupied locations in the state. The Battle of Marais des Cygnes was fought here during the American Civil War...

, where it splits off to the east. Three miles later, it crosses into Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

, becoming Route 52.