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.

The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop ...

The world's largest steam locomotive chugged through Colorado Thursday as part of its limited summer tour. Here are some of ...

Enjoy the sights and sounds of Union Pacific's Big Boy No. 4014 in Colorado.

"Big Boy," a 1.2 million-pound locomotive, is back in Colorado after being restored to the world’s largest operating steam ...

Union Pacific’s iconic steam locomotive Big Boy No. 4014 will stop in several Nebraska communities as part of Union Pacific’s celebration of its 150th anniversary.

Union Pacific’s Big Boy began its only scheduled trip of 2025 today (July 17), heading from its home base in Cheyenne, Wyo., ...

Union Pacific's famed Big Boy No. 4014, the world's largest steam locomotive, returns to the rails Wednesday for its Home Run Express Tour to Omaha, where it will be on display for 11 days during ...

No railroad was better equipped to shoulder the heavy burden of wartime traffic thanks to the three types of Union Pacific ...

DENVER (KDVR) — The world’s largest operating steam locomotive, known as Big Boy No. 4014, is coming back to Colorado — and this time, it’s bringing a friend. Union Pacific, a railroad ...

As part of this year’ s summer excursion, the Union Pacific Railroad Museum will auction off four exclusive cab rides between Cheyenne, Wyoming, and Denver, Colorado. July 17 Cheyenne, Wyoming ...

OMAHA, Neb., May 27, 2025--Union Pacific Railroad announced today its legendary steam locomotive, Big Boy No. 4014, will make two whistle-stops in Greeley, Colorado, this summer as part of a ...