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Stonyford, also known as the Grindstone OHV trail system, is a vast, 200-mile trail network in the Mendocino National Forest that is an excellent destination for dirtbike riders. The park offers a wide variety of terrain, from open meadows and hard-packed ground to challenging hill climbs, rocks, and water crossings. The trail system includes some single-track trails and is suitable for riders of all skill levels, from beginner to expert. The trails are heavily maintained, marked, and rated.
This multi-use area has a 50-inch vehicle width limit and allows ATVs and UTVs. The park features multiple campgrounds with paved access and swimming holes. Camping is permitted in some areas.Dirt Bike Trail System
Stonyford
AKA: Davis Flat, Wolf Creek, Fouts Springs, Fout Springs, Fouts Campground, Little Stony, Cedar Canyon, Mendocino National Forest, Mine Camp, Grindstone Ranger District, Letts Lake, Mill Creek Campground, Potato Hill
Stonyford, CA
Off-Road Trails
Trail System Statistics
Braaply Rating
Awesome
Approximate Size
90,240 acres (141 sq mi)
Miles of Trail
200 miles
Elevation Range
1700 to 6000 ft.
Operating Season
All Year
About Stonyford
Stonyford, also known as the Grindstone OHV trail system, is a vast, 200-mile trail network in the Mendocino National Forest that is an excellent destination for dirtbike riders. The park offers a wide variety of terrain, from open meadows and hard-packed ground to challenging hill climbs, rocks, and water crossings. The trail system includes some single-track trails and is suitable for riders of all skill levels, from beginner to expert. The trails are heavily maintained, marked, and rated. This multi-use area has a 50-inch vehicle width limit and allows ATVs and UTVs. The park features...
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Terrain Details
Surface Types
Loose Dirt
Few
Hard Pack
Mostly
Sand
None
Rocks
Few
Natural Features
Trees
Few
Steep Hills
Many
Water Crossings
Few
Trail Features
Small Jumps
Many
Large Jumps
Few
Berms
Few
Pits
None
Trail Types
Singletrack
Few
Roads
Few
Traffic & Safety
Rider Traffic
Few
Hazards
Few
Difficulty Levels
Novice Terrain
Little
Amateur Terrain
Few
Expert Terrain
Mostly
Trail Maintenance
Trails are regularly maintained, visibly marked, and rated for difficulty.
Terrain Hazards
Be aware of a few cliffs, as some trails go adjacent to steep cliffs.
Getting Here & Info
Parking
No parking fees reported.
Camping
Camping is allowed in developed sites only.
Permit Required
Yes
Permit Info
CA OHMVR stickers required(Red Sticker Permitted Year-Round)
Regulations
Motorcycles that are registered for the street may also use the trails. The plate must be properly displayed at all times, including off-highway.
Operating Season
All Year
Trailhead Coordinates
39.3778267, -122.5491291
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