The immense size of the Union Pacific's Big Boy locomotive #4014 is something that every railfan should see. The Union Pacific Steam Team does an incredible job maintaining this million-pound mar... (more)

The Union Pacific's Big Boy locomotive #4014 leaves the Cheyenne Yard on a test run which will take them to the Hermosa Tunnels before heading back to the barn in downtown Cheyenne. The beautiful ... (more)

The Union Pacific's Big Boy locomotive #4014 runs west on the Transcon through Speer, Wyoming as it makes a test run prior to leaving on the cross-country journey next week.

The Union Pacific's Big Boy locomotive #4014 runs under the signal tower at Cheyenne, Wyoming as it heads back to the steam shop across the tracks from the Cheyenne Depot.

The Union Pacific's Big Boy locomotive makes smoke as it runs up the grade as Speer, Wyoming on its recent test run.

4014 at a whistle stop at Big Sandy. The train was late by 5 hours at Big Sandy due to a disabled freight ahead of it.

Union Pacific Big Boy #4014 (4-8-8-4) heads back to Cheyenne, Wyoming after making a test run to the Hermosa Tunnels.

The Union Pacific's Big Boy #4014 (4-8-8-4) backs up towards the steam shop in Chyenne, Wyoming. Note the removal of the 'elephant ears' that were on the engine when it made a run earlier to Denve... (more)

Here is a good look at the Union Pacific's Big Boy #4014 (4-8-8-4) as it runs backwards through Granite on track #1 while heading back to the barn in Cheyenne. Of particular note is the removal of... (more)

Union Pacific's Big Boy #4014 (4-8-8-4) made a test run going from Chyenne to the tunnels at Hermosa, Wyoming, and is seen here running backwards through Granite on track #1 while heading back to ... (more)

Union Pacific's Big Boy 4014 (4-8-8-4) reflects in a puddle as it heads west out of the Cheyenne Yard for a run to the Hermosa Tunnels. This was a trial run to prepare for the more extensive cros... (more)

Union Pacific's Big Boy 4014 (4-8-8-4) runs under the signal tower as it enters the yard after a trial run in preparation for the cross-country trip.

Union Pacific's Big Boy 4014 (4-8-8-4) runs through Speer, Wyoming on a test run prior to embarking on their cross-country journey at the end of March. This run was unique in that they did not ta... (more)

Cheyenne Wyoming Union Pacific 4014 just lifts off for its journey south to Denver in September 2025. Many preparations were made for this run for officials and executives of the road.

Union Pacific 4018 is displayed in the company of UP DDA40X 6913, Frisco 4-8-4 4501, and a Pennsylvania GG1 at the Museum of the American Railroad in Frisco, which celebrates all US railroads. The... (more)