California Zephyr

The Zephyr is a passenger train operated by Amtrak between Chicago and the San Francisco Bay Area, via Omaha, , , and Reno.

At 2,438 miles (3,924 km), it is Amtrak’s longest daily route, and second-longest overall after the Eagle’s triweekly continuation from San Antonio to , with travel time between the termini taking approximately 51.5 hours.

Amtrak claims the route as one of its most scenic, with views of the upper valley in the Rocky Mountains, and the Sierra .

The modern train is the second iteration of a train named Zephyr; the original train was privately operated and ran on a different route through and .