High Quality Content by WIKIPEDIA articles! U.S. Route 54 is an east–west United States highway that runs northeast-southwest for 1,197 miles (1,926 km) from western Illinois to El Paso, Texas. It enters and leaves Texas twice. Union Pacific`s Tucumcari Line runs parallel to US-54 from El Paso to Wichita, Kansas, which comprises about two-thirds of the route.