The San Francisco Chief was a streamlined passenger train on the Atchison, Topeka, and Santa Fe Railway ("Santa Fe") between Chicago and the San Francisco Bay Area. It ran from 1954 until 1971. The San Francisco Chief was the last new streamliner introduced by the Santa Fe, its first full train between Chicago and the Bay, the only Chicago–Bay Area train running over just one railroad, and at 2,555 miles (4,112 km) the longest run in the country on one railroad. The San Francisco Chief was one of many trains discontinued when Amtrak began operations in 1971.