World’s Largest Steam Locomotive ‘Big Boy No. 4014’ Returns to the Rails to Celebrate 160 Years of Union Pacific

OMAHA, Neb., April 11, 2022 /PRNewswire/ — Union Pacific’s famed Big Boy No. 4014 is set to return to the rails this summer for its “West Coast Steam Tour.” Kick off June 26 from Cheyenne, Wyomingthis year’s tour will celebrate Union Pacific’s 160th anniversary, railroad heritage and the communities served by the railroad, visiting the Pacific Northwest for the first time since its return to service.

The Big Boy will be exhibited in four cities:

  • July 6, 2022: Sparks, Nevada
  • July 8-9, 2022: Roseville, California
  • July 15-16, 2022: Portland, OR
  • July 21-22, 2022: Boise, Idaho

Exhibit days include locomotive viewing, access to “Discover the Union Pacific Railcar”, a multimedia exhibit that provides insight into the past while telling the story of the modern railroad, and live Q&A with the Steam team.

Twenty-five Big Boy locomotives were built for Union Pacific to haul heavy goods during World War II and of the eight still preserved, No. 4014 is the only working Big Boy in the world. Weighing in at 1.1 million pounds, it is the second tour since the locomotive was restored for 2019’s ‘Great Race’ tours, which celebrated the 150th anniversary of the completion of the transcontinental railway, following a retirement that lasted six decades.

“The Big Boy was delivered to Union Pacific in December 1941 and helped carry the nation through World War II,” said Scott Moore, Senior Vice President – ​​Corporate Relations and Chief Administrative Officer. “It now serves as a reminder of our history and how rail is the backbone of America. Last year’s tour drew approximately 1.1 million people from the communities we serve, and we can’t wait to share Big Boy again this summer.”

Big Boy #4014 will be leaving the Steam Shop in Cheyenne, Wyoming, June 26making brief warning stops in dozens of communities California, Idaho, Nevada, Oregon, Utah and Wyoming. Further details will be released in May.

A steam tracking map showing the location and route of #4014 will be available on

Union Pacific (NYSE: UNP) provides the goods families and businesses use every day with safe, reliable and efficient service. Operating in 23 western states, the company connects its customers and communities to the global economy. Trains are the most environmentally friendly way to transport goods, helping Union Pacific protect future generations. More information about Union Pacific is available at

SOURCE Union Pacific Railroad

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