Lonely Planet
Riding the California Zephyr
The Amtrak route between the San Francisco Bay area to Chicago shows a diverse cross-section of the nation that you won
Tracks run parallel to it for hundreds of miles

“The Colorado River is one of the principal rivers in the Southwestern United States and in northern Mexico. The 1,450-mile-long (2,330 km) river, the 5th longest in the United States, drains an expansive, arid watershed that encompasses parts of seven U.S. states and two Mexican states. The name…”
Lonely Planet
The Amtrak route between the San Francisco Bay area to Chicago shows a diverse cross-section of the nation that you won
Tracks run parallel to it for hundreds of miles