Greenhorn Ranger District
The Greenhorn Ranger District has OHV opportunities on three geographically separated mountaintop areas. Breckenridge Mountain contains about 16 miles of single-track trails suited to motorcycles, about 15 miles of easy 4WD and 5 miles of difficult 4WD routes. The 4WD routes are also open to motorcycle and ATV use. Greenhorn Mountain contains about 56 miles of single-track trails and about 25 miles of 4WD trails varying widely in difficulty. Piute Mountain contains about 113 miles of single-track trails and 4 miles of 4WD routes. There are about 300 miles of dirt roads available for motorcycles, ATV's and 4WD's with the average number of OHVs using these trail systems approximately 15,000 units per year (motorcycle/ATV/4WD).

The District has several volunteer groups involved in the "Adopt-a-Trail" program. Backcountry Horsemen have adopted the Mill Creek Trail (open to OHV use). Bakersfield Trailblazers (4WD club) has adopted Freeway Ridge 4WD, Black Gulch 4WD and the Borderline 4WD, as well as helped substantially on a major single-track trail reconstruction. Southern Sierra Fat Tire Association (mountain bike club) has adopted the Badger Gap Trail, the Kern Canyon Trail, and the Just Outstanding Trail (all open to OHV use).

The SSFTA is the leading volunteer group. They usually donate over about 500-1,000 hours of work per year just by themselves. Their work usually consists of removing fallen trees from the adopted OHV routes, cutting back brush along routes, reconstructing trail tread, filling in gullies, removing rocks or other hazards on the trail and picking up litter along the way.

To keep all vehicles on trails and roadways, the district is in the process of marking routes that will be kept clearly marked and kept clear of fallen trees and other hazards by regular patrols and volunteers. Illegal trails, which develop, either from people going around trail obstacles or from new trail creation, will be closed with signs until they can be physically rehabilitated.