The California Zephyr runs over a bridge at Hudson, Colorado.

The California Zephyr runs through West Tonville on its way to Denver, Colorado.

Above It All In Auburn. Amtrak Train 5 (California Zephyr) had an extra and colorful addition to the head end, seen passing over Interstate 80 in Auburn, California on the afternoon of Frid... (more)

The morning California Zephyr arrives in Denver, navigating between the BNSF freight traffic in the Denver Yard before it backs into Union Station.

Amtrak's California Zephyr runs with a triple engine configuration as it passes through Crescent, Colorado and by Gross Reservoir, which can be seen in the background.

The California Zephyr sweeps around the big curve between Melrose and Russell on the BNSF Ottumwa Sub. A beautiful white countryside is seen from overnight frost and a snow storm. The train is 43 ... (more)

The California Zephyr #6 was nearly 14 hours late getting out of Denver, enabling this shot as it passes through Keenesburg on the Brush Sub with the Colorado Rocky Mountains in the background.

Enjoying the view and having great times in the Superliner Sightseer Lounge aboard Amtrak's California Zephyr through Glenwood Canyon.

The outbound California Zephyr makes a station stop in Naperville before continuing on its trip to the west coast.

After leaving Denver nearly 13 and a half hours late, the California Zephyr #6 passed Barr Lake in Brighton, Colorado in the daytime.

The California Zephyr runs through Arvada, Colorado on the Moffat Tunnel Sub.

Amtrak's California Zephyr speeds westbound into the setting sun as it travels over BNSF trackage, crossing over the Des Moines River on the west side of Ottumwa, Iowa.

This morning's #5 California Zephyr was 8 hours late getting to Fort Morgan, which enabled a rare shot of the westbound Zephyr running through the 'Keenesburg Cut' with sun shining from the west. ... (more)

Amtrak's California Zephyr speeds westbound through Chillicothe, Iowa as it passes by BNSF empty coal train E CLOBKM0 38A, sitting on the lead to the Ottumwa Generating Station. Once Amtrak was pa... (more)

The Eastbound California Zephyr is seen passing through Casa Loma on its way up to Donner Pass.