High Quality Content by WIKIPEDIA articles! The Capitol Limited was an American passenger train run by the Baltimore and Ohio Railroad, originally between New York City and Grand Central Station in Chicago, Illinois via Union Station, Washington, D. C. and Pittsburgh. For almost 48 years, it was the B O`s flagship passenger train, noted for personalized service and innovation. At the time of its discontinuation on May 1, 1971, when Amtrak took over most rail passenger service in the U.S., the Capitol Limited operated between Washington and Chicago.