3The California Zephyr (USA) – 3,924 km

The California Zephyr is one of the longest train journeys in the United States, stretching 3,924 kilometers (2,438 miles) from Chicago to Emeryville, California.
The California Zephyr is one of the longest train journeys in the United States, stretching 3,924 kilometers (2,438 miles) from Chicago to Emeryville, California.