Dirt Bike Trails
Near Tomales, California

The main connector between the north and south entrances of the Knoxville OHV area. Very active with power sports vehicles, as many marked and unmarked trails crisscross this trail. An easy trail with good views of the mountains, including. Mt. Saint Helena in Napa. It also passes by the only develo...
Learn more about Dunnigan Hill

Graded dirt road connecting Highway 1 to Highway 128. Pavement is on both ends. A great dirt road with a flowy climb up from the coast to follow the ridge inland. Beautiful views and usually quiet traffic, but please do watch out for some blind corners and the occasional logging truck. Great route t...
Learn more about Fish Rock Road

For expert riders only, this trail is rated extremely difficult. Trail hazards may Include; narrow and steep sections, washed-out sections, fallen trees, and large falling or loose rocks. Boundary Tidge "Trail 25" is an 8-mile route that takes you along the top ridges of South Cow Mountain OHV. The ...
Learn more about Boundary Ridge, Trail 25

Walker Ridge Road is one of the main entrances to the Indian Valley Reservoir (CDFW) and the Walker Ridge Recreation Area (BLM). The road is gravel and accessible by most high-clearance vehicles. There are plenty of OHV and 4x4 trails off the main road. Walker Ridge Recreation Area allows all types ...
Learn more about Walker Ridge Road to Indian Valley Reservoir Road

An easy scenic route over mountain ridges through South Cow Mountain OHV that connects lakeport to Ukiah. This is the main dirt road through cow mountain that has multiple harder trails off either side and has multiple campgrounds that are easily accessible by 2WDd vehicles. There are excellent view...
Learn more about Mendo-Lake Road

Easy dirt trail with connections to the Berryessa Snow Mountain Monument area Trails with wildflower sights in Spring and the main road to The Wilbur Hot Springs. Beautiful scenery of the Bear Valley in Lake and Colusa Counties in Spring with Bear Creek passing next to the trail. Near the end of the...
Learn more about Bear Valley Road Trail

Cold Spring is an inviting off-road spur trail ideal for high-clearance four-wheel-drive vehicles, SxSs, and dirt bikes seeking a quiet mountain escape with panoramic views of the Indian Valley Reservoir. Branching off the county-maintained Bartlett Springs Road near Cold Spring Mountain, this route...
Learn more about Cold Spring

Bartlett Springs Road begins southeast of Mendocino National Forest and boasts excellent views. This route passes through BLM land, and there are plenty of offshoots from the trail. There are also opportunities for camping, hiking, mountain biking, fishing, hunting, and recreational shooting. Cell s...
Learn more about Bartlett Springs Road

Flowy dirt road that climbs through grassy oak woodlands before entering the redwood forests of the California Coast. Quiet road with minimal obstacles. Currently, there is a bridge on the route that is closed to cars (see photos). Nothing larger than a BMW Adventure bike is going to be able to pass...
Learn more about Low Gap Road

Out-and-back trail, big dispersed camp area at the end of the trail for multiple vehicles. There are a few spots to pass, and a dirt bike trail is towards the beginning. has a few ledges from erosion and some washes. Toward the end of the trail, before it descends into the camp spot, there is a good...
Learn more about Stony Slope - FS 17N89

This trail is a little less than 4 miles and leads to Letts Lake and campground. As the only lake in the lower half of Mendocino NF, it is worth visiting. There are four campsites around the lake; each has a handful of first come, first serve sites. You may also swim and fish in the lake.
Learn more about Letts Lake

This is an out-and-back trail that leads to off-highway specific trails. It is also shared use, so be cautious of others. There are dispersed camp sites along the way, and it ends in a bigger one. The trail is narrow, but it has room for a full-size truck and multiple spots to pull out or turn aroun...
Learn more about Bluejay - FS 17N38

This trail used to be longer, but erosion turned it into half just a dirt bike trail. This trial ends at a bit of a turn around that you could unload your bikes and hit the other trails from that point. It's also a connector to the Old Letts Trail. This trail is single vehicle wide, and there are a ...
Learn more about East Letts - FS 17N02k

This is an out-and-back trail that is shared use and leads to multiple off-highway vehicle trails. There are some dispersed campsites along the way and at the end, but there is a huge dedicated dispersed primitive campsite area about halfway through. This is a single-wide, mostly flat trail that get...
Learn more about Willow Rock - FS 17N39

This is an out-and-back shared-use trail that takes you to multiple trail heads for off-highway vehicles. There are a couple of dispersed camp sites along the trail. This is a single-wide trail with a few areas to pass or turn out. There are a couple of small washes as well.
Learn more about Little Round - FS 17N37

The main connector between the north and south entrances of the Knoxville OHV area. Very active with power sports vehicles, as many marked and unmarked trails crisscross this trail. An easy trail with good views of the mountains, including. Mt. Saint Helena in Napa. It also passes by the only develo...
Learn more about Dunnigan Hill

For expert riders only, this trail is rated extremely difficult. Trail hazards may Include; narrow and steep sections, washed-out sections, fallen trees, and large falling or loose rocks. Boundary Tidge "Trail 25" is an 8-mile route that takes you along the top ridges of South Cow Mountain OHV. The ...
Learn more about Boundary Ridge, Trail 25

Walker Ridge Road is one of the main entrances to the Indian Valley Reservoir (CDFW) and the Walker Ridge Recreation Area (BLM). The road is gravel and accessible by most high-clearance vehicles. There are plenty of OHV and 4x4 trails off the main road. Walker Ridge Recreation Area allows all types ...
Learn more about Walker Ridge Road to Indian Valley Reservoir Road

An easy scenic route over mountain ridges through South Cow Mountain OHV that connects lakeport to Ukiah. This is the main dirt road through cow mountain that has multiple harder trails off either side and has multiple campgrounds that are easily accessible by 2WDd vehicles. There are excellent view...
Learn more about Mendo-Lake Road

The main connector between the north and south entrances of the Knoxville OHV area. Very active with power sports vehicles, as many marked and unmarked trails crisscross this trail. An easy trail with good views of the mountains, including. Mt. Saint Helena in Napa. It also passes by the only develo...
Learn more about Dunnigan Hill

For expert riders only, this trail is rated extremely difficult. Trail hazards may Include; narrow and steep sections, washed-out sections, fallen trees, and large falling or loose rocks. Boundary Tidge "Trail 25" is an 8-mile route that takes you along the top ridges of South Cow Mountain OHV. The ...
Learn more about Boundary Ridge, Trail 25

Walker Ridge Road is one of the main entrances to the Indian Valley Reservoir (CDFW) and the Walker Ridge Recreation Area (BLM). The road is gravel and accessible by most high-clearance vehicles. There are plenty of OHV and 4x4 trails off the main road. Walker Ridge Recreation Area allows all types ...
Learn more about Walker Ridge Road to Indian Valley Reservoir Road

An easy scenic route over mountain ridges through South Cow Mountain OHV that connects lakeport to Ukiah. This is the main dirt road through cow mountain that has multiple harder trails off either side and has multiple campgrounds that are easily accessible by 2WDd vehicles. There are excellent view...
Learn more about Mendo-Lake Road