This undated image provided by Amtrak shows the California Zephyr train near Truckee, Calif. The California Zephyr starts in Emeryville, Calif., near San Francisco, en route to Reno, Nev., a 236 ...

Tunnel 41 allows people on the California Zephyr to pass through the most treacherous part of the California trail with ease.

That’s not the only historical aspect of the route — the name California Zephyr also dates back to the train that ran from 1949 to 1970, before Amtrak even began.

Mudslides in Colorado blocked a number of Amtrak's California Zephyr trains, a route that runs between Chicago and Emeryville, as well as stranded auto travelers and blocked bus routes over the ...

Amtrak’s California Zephyr runs a daily 2,438-mile trip to Emeryville/San Francisco from Chicago, roughly a 52-hour journey.

Prior to federally subsidized Amtrak taking over the route in 1983, the California Zephyr was privately run by three train corporations.

Prior to federally subsidized Amtrak taking over the route in 1983, the California Zephyr was privately run by three train corporations.

The California Zephyr train follows a snowy route through Rocklin, Calif. The Zephyr crosses the Sierra Nevada mountain range and follows the same course as the historic Transcontinental Railroad.

Prior to federally subsidized Amtrak taking over the route in 1983, the California Zephyr was privately run by three train corporations.