San Pedro Valley
| San Pedro Valley | |
|---|---|
Prairie in the San Pedro Valley near Tombstone, Arizona. The Dragoon Mountains are in the background. | |
| Length | 50 mi (80 km) |
| Geography | |
| Country | United States, Mexico |
| State | Arizona, Sonora |
| Communities | |
| Borders on | |
| Coordinates | 31°38′9″N 110°10′21″W / 31.63583°N 110.17250°W |
| River | San Pedro River |
The San Pedro Valley starts 10 miles (16 km) south of the United States–Mexico border and extends 140 miles (230 km) north through Arizona. The San Pedro River flows from the state of Sonora, Mexico, through Cochise, Pima, Graham, and Pinal Counties to Winkelman, Arizona.