The California Zephyr runs through Plainview, Colorado on a beautiful morning in the Colorado Rocky Mountains.

Rural Grand County Rural beauty on the west side of the Great Divide in winter west of Grandby, CO

The California Zephyr runs past a signal at Crescent, Colorado as it heads towards the Moffat Tunnel.

The California Zephyr 5 train runs through the Tolland Valley and will soon enter the Moffat Tunnel.

After leaving Denver, Colorado, the California Zephyr 5 train runs through Crescent and past the Gross Reservoir dam.

The California Zephyr 5 train races the sunrise through Keenesburg, Colorado as it heads to Denver on the Brush Sub.

A pair of Amtrak trains sit on tracks 4 and 5 at Denver's Union Station. Amtrak engine #163 (P42DC) will leads the California Zephyr 6 out of Denver and Amtrack engine #174 will lead the Colorado... (more)

Amtrak engine #163 (P42DC) leads the California Zephyr through Tolland, Colorado on its way to the Moffat Tunnel.

The California Zephyr through Tolland, Colorado as it heads to the Moffat Tunnel and the Rocky Mountains.

Amtrak engine #163 (P42DC) leads the California Zephyr through the corner at Tolland, Colorado.

Slowest Permanent Speed Order California Zephyr is running a little late through Beyers Canyon into the 15 degree west of Sulphur the slowest permanent speed restriction between Denve... (more)

The California Zephyr runs past a frozen South Boulder Creek as it heads towards the Moffat Tunnel and Tolland, Colorado.

Amtrak’s California Zephyr passes the site of Tunnel 41, removed many years ago by Rio Grande, in Little Gore Canyon approaching Radium, Colorado, on the afternoon of September 19, 2023.

Amtrak’s westbound California Zephyr has just curved out of Tunnel 1 east of Plainview while climbing Colorado’s front range mountains on the morning of September 13, 2023.

Amtrak’s westbound California Zephyr has just exited Little Gore Canyon and is approaching Radium, Colorado, on the afternoon of September 19, 2023.