The Great Valley Region region includes the Shasta-Trinity, Mendocino, and Lassen National Forests.

This region is located:

• North of I-80
• South of CA-44
• East of US-101
• West of Ca-70

There are 1,154 OHV routes contained in this regional KML file. The file is compressed into a ZIP file for faster download to your computer. Please consult our Help section for tips on working with the route files.