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 Big Boy #4014 (4-8-8-4) runs south on the Greeley Sub through Carr, Colorado and will end the day in Denver.

Union Pacific's Big Boy locomotive #4014 (4-8-8-4) backs into the North Yard in Denver, Colorado during one of the two trips it took in 2025. Railfans await the cross-country trip which has been ... (more)

Union Pacific's Big Boy #4014 (4-8-8-4) runs through Speer, Wyoming as it heads to Denver on the first runs of the year.

Tying Down at North Yard Union Pacific’s finest settles for the evening at Denver North Yard.

Track Three Testing newly installed PTC gear west of Cheyenne near Sherman Summit on track 3 the Harriman Cutoff.

This shot gives a good look at the 'Elephant Ears' smoke deflectors that were installed on UP Big Boy #4014 as it runs through Speer, Wyoming on its way to Denver, Colorado.

Union Pacific Big Boy #4014 (4-8-8-4) makes smoke as it heads south on the Greeley Sub towards Denver, Colorado.

Running past the silos in Platteville, CO, Union Pacific 4014 "Big Boy" continues south on July 17th's run from Cheyenne, WY, to Denver, CO.