WICHITA, Kan. (KSNW) – Union Pacific’s Big Boy No. 4014 will return to the rails in a big way in 2026 to celebrate America’s 250th anniversary. The CEO of Union Pacific told Trains.com late last week ...

Union Pacific Railroad's iconic Big Boy No. 4014, the world’s largest operating steam locomotive, will journey between Wyoming and Colorado later this month. The limited excursion will offer rail fans ...

The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop in the Mile High City on Friday. It first rode the rails in the 1940s ...

Jennifer McRae is a digital media producer for CBS Colorado with more than 25 years of experience in news. Jennifer is part of the digital team recognized for excellence for Best Website several times ...

GREELEY, Colo. — The world's largest steam engine is back in Colorado. Union Pacific will bring Big Boy No. 4014 to Greeley from Tuesday to Wednesday, as part of a limited autumn excursion. The tour ...