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Big Boy No. 4014's 2026 Coast-to-Coast Tour

Union Pacific celebrated America's 250th birthday with an epic tour with the Big Boy from Sacramento to Philadelphia.

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About Big Boy No. 4014

Watch 'Big Boy No. 4014: A Coast-to-Coast Journey'

Union Pacific's famed Big Boy No. 4014, the world's largest operating steam locomotive, journeyed from coast-to-coast, celebrating America's 250th anniversary in 2026. Starting in the spring with a stop at the Central Pacific's Milepost Zero in Sacramento, the Big Boy made extended stops in Ogden, Omaha, West Chicago, Buffalo and Scranton before celebrating Independence Day in Philadelphia. 

On Big Boy's return trip to Cheyenne, the Big Boy made additional extended stops in Altoona, Pennsylvania; Fostoria, Ohio and St. Louis, Missouri.

Join the Official Union Pacific Steam Club to stay updated with future schedule announcements involving our steam program!
Big Boy 4014

Big Boy Kicks Off America 250 Tour from Historic Transcontinental Site

Union Pacific’s legendary Big Boy No. 4014 steam locomotive embarked on its first coast-to-coast tour in celebration of America’s 250th anniversary with a kickoff ceremony held at Milepost 0 in downtown Sacramento – the historic site where Central Pacific Railroad began construction on the first transcontinental railroad line in 1863.

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Union Pacific and Norfolk Southern Celebrate America’s 250th Anniversary

Union Pacific’s legendary Big Boy No. 4014 took center stage in Philadelphia on the Fourth of July as tens of thousands gathered for the America250 Block Party, commemorating the nation’s 250th anniversary.

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Union Pacific’s Big Boy No. 4014 Runs on Its Own Steam

Diesel locomotives assist with braking, switching and showcasing commemorative locomotives

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The Flag Tradition of Union Pacific Steam

When Union Pacific Railroad’s Big Boy No. 4014 rolls through a town, it carries more than history and horsepower – it carries the symbols of the nation and the communities it steams through.