Denver & Rio Grande Western 491 starts up the hill on a run around the Colorado Railroad Museum track.

BNSF 5328 (Dash9) leads a freight south on the Joint Line through Douglas County, Colorado.

UP 1820 (SD40-2) leads the local freight as it runs south from Greeley to Brighton, Colorado.

UP 1640 (SD40N) works the North Yard in Denver, Colorado.

UP 7792 (ES44AC) runs through Fort Lupton, Colorado as it heads south on the Greeley Sub.

A golden sunrise catches the California Zephyr running through Wiggins, Colorado on the Brush Sub.

Fireman Sam Kunugi shovels coal into Denver & Rio Grande Western 491's firebox on a cool May night.

The Royal Gorge Railroad's F Units follow the Arkansas River as they take a load of passengers on a scenic journey.

Snow flurries fall over the Tolland Valley as BNSF 5146 (Dash9) leads a freight east on the Moffat Tunnel Sub towards Rollinsville, Colorado.

The California Zephyr 5 train passes by Barr Lake at sunrise as it heads to Denver, Colorado on the Brush Sub.

The Amtrak Winter Park Express Ski Train rounds the corner in the North Yard as it takes a load of skiers from Denver to the Winter Park ski resort.

The Rocky Mountaineer runs down the 2% grade at Eisele, Colorado as it heads back to Denver on the Moffat Tunnel Sub.

Rio Grande Southern 20 steams onto the turntable on a beautiful spring morning.

The Rocky Mountaineer runs through Coal Creek Canyon, Colorado as it heads into the Colorado Rocky Mountains on the way to Utah.

RMRX 8020 (GP40-3) leads the Rocky Mountaineer over Highway 72 in Coal Creek Canyon, Colorado.