Union Pacific Railroad
The Union Pacific Railroad , headquartered in Omaha, Nebraska
Omaha, Nebraska
Omaha is the largest city in the state of Nebraska, United States, and is the county seat of Douglas County. It is located in the Midwestern United States on the Missouri River, about 20 miles north of the mouth of the Platte River...

, is the largest railroad network in the United States. James R. Young
James R. Young (UP)
James R. Young is the current President, Chief Executive Officer and Chairman of the Board for Union Pacific Railroad. Young has a wife, Shirley, and three children.- Youth and education :...

 is president, CEO and Chairman.

UP's route map covers most of the central and western United States west of Chicago and New Orleans
New Orleans, Louisiana
New Orleans is a major United States port and the largest city and metropolitan area in the state of Louisiana. The New Orleans metropolitan area has a population of 1,235,650 as of 2009, the 46th largest in the USA. The New Orleans – Metairie – Bogalusa combined statistical area has a population...

. As of December 31, 2008 UP operates on 32012 miles (51,518 km) of track, of which it owns outright 26171 miles (42,118 km). Both numbers represent the highest amount of any railroad currently operating in the United States.