Kansas City Southern Railway #4738 (ES44AC) runs a loaded coal train through Spruce, Colorado on the Joint Line.

The Royal Gorge Railroad's #403 (F7A) runs through Canyon City, Colorado as it heads to the depot after taking passengers along the Arkansas River and the famed Tennessee Pass.

The Amtrak Winter Park Express leaves Denver, Colorado as a bright sunrise bathes the North Yard in a golden glow.

BNSF 2854, a former AT&SF GP39-2 still in its Bluebonnet paint, works the yard in downtown Denver, Colorado.

Union Pacific Big Boy #4014 kicks up the snow as it runs towards Speer, Wyoming while heading back to the barn in Cheyenne after its inaugural run following a lengthy restoration.

UP 7504 (ES44AC) runs northbound on the Joint Line past the rock formation that give Castle Rock, Colorado its name.

BNSF 9266 (SD70ACe) shoves a loaded coal train past Barr Lake in Brighton, Colorado at sunrise.

Stormy skies greet a minty looking BNSF 3320 (ES44ACH) as it leads a coal train south on the Joint Line through Castle Rock, Colorado.

After arriving in Denver, Colorado under mild weather conditions, the California Zephyr ran through snow and a wind chill temperature of zero degrees in Tolland, Colorado as it headed to the Moffa... (more)

The California Zephyr runs past Barr Lake at sunrise as it heads to Denver on the Brush Sub.

KCS 4738 (ES44AC) runs on the Joint Line past some historic livestock pens in Greenland, Colorado.

A pair of BNSF SD70ACe's shove a loaded coal over the Santa Fe Bridge in Larkspur, Colorado as it runs south on the Joint Line.

The Abominable Big Boy #4014 engine of the Union Pacific Railroad arrived in Denver to blue skies and warm weather in November of 2019, while making the inaugural run after a long restoration. On ... (more)

The Royal Gorge Railroad has delighted railfans by putting their EMD F7(A) and F7(B) units back into service, running passenger trains along the Arkansas River on the famed Tennessee Pass line.

The California Zephyr #6 train is running on time as it passes the Winter Park Express Ski Train at Fraser, Colorado.