Union Pacific’s Big Boy Steam Locomotive Slated for Denver Stop
Union Pacific's Big Boy steam locomotive is scheduled to stop in Denver on November 21st as part of its holiday tour.
Denver, CO, September 22, 2026 —
Union Pacific’s historic Big Boy steam locomotive is set to make a scheduled stop in Denver on November 21st. This appearance is part of the locomotive’s ongoing holiday tour.
The Big Boy, one of the largest and most powerful steam locomotives ever built, is a significant piece of American railway history. Its tours are rare events that draw considerable public interest. The specific details regarding the duration of the stop in Denver or any public viewing opportunities were not provided in the available information.
The locomotive is currently on its holiday tour, with Denver being one of its designated stops. Further information regarding the tour schedule beyond this Denver engagement was not detailed. The significance of the Big Boy lies not only in its engineering marvel but also in its role as a tangible connection to the golden age of rail travel.
This particular locomotive, designated as No. 4014, is one of only eight Big Boys ever built by the American Locomotive Company. It was originally built in 1941 for Union Pacific and operated until 1959. After being retired and preserved for many years, it was restored to operating condition and returned to excursion service in 2019.
The stop in Denver is part of its planned itinerary for the holiday season. Specific locations within Denver and times for public access have not been made available.
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