Union Pacific's magnificent Big Boy #4014 rounds the corner at Speer, Wyoming as it begins the trip to Denver, Colorado.

Videographer Bruce Brackley has a front row seat as Big Boy UP 4014 (4-8-8-4) runs through Speer, Wyoming on its way to Denver., Colorado.

UP Big Boy 4014 runs through the cut at Speer, Wyoming as it begins the journey towards Denver, Colorado where it was displayed for a day at Denver's Union Station.

Union Pacific's monstrous Big Boy 4014 slides south onto the Greeley Subdivision en route to Denver for its only scheduled service weekend for 2022.

Passing milepost 107 on the Colorado & Southern line that treks south to Denver, a Burlington Northern coal train crosses the Wyoming state line into Colorado on July 5, 1989.

UP 8039 (C45ACCTCE) leans into a corner at Speer, Wyoming, passing the iconic old water tower as it leads the train west on track 3.

High Plains Drifter: The windswept plains of Wyoming can be a cold environment and the comparatively lonely rails of the Colorado & Southern Rwy., at this time still a separate entity of BN, hoste... (more)

Following its rescue from display adjacent to the passenger depot in Cheyenne, UP 3985 was restored for service. In March of 1981 it made its first test run on the mainline - handling a short cons... (more)

A month-long trip is in its final miles as #4014 heads up the hill to the junction at Speer and into Cheyenne. #1989 was part of the display event in Denver, it will lead the passenger cars east ... (more)

Swan Ranch Railroad's SD40M-2 and tunnel motor work the industrial area southwest of Cheyenne, Wyoming.

UP 1905 (SD40N) runs long hood forward (backwards) with a MOW train at Speer, Colorado.

UP Big Boy 4014 (4-8-8-4) rounds the corner at Speer, Wyoming on its way back to the Cheyenne Yard after a successful test run.

UP 7692 (ES44AC) leads three other motors and a long freight through Speer, Wyoming, and will run to Greeley, LaSalle and then eventually make Denver, Colorado.

70 years ago it would have been a common sight to see a Big Boy engine rounding the curve and the water tank at Speer, Wyoming.

The good looking Swan Ranch Railroad units pair up to move a cut of hoppers and coil cars in the yard at Speer, Wyoming.