Swamp OHV Route: For the experienced drivers. Long wheel base vehicles recommended only from Exchequer Meadow to Hatch Lake trail junction. The route is approximately 9 miles and takes 4.5 hours to drive. To get there take Hwy 168 east of Clovis to the Dinkey Creek Road (just before your get to Shaver Lake). Follow the Dinkey Creek Road east to Dinkey Creek. At Dinkey Creek turn on the McKinley Grove Road. Travel 2.5 miles to the Swamp Lake Vehicle Route. Turn north and follow the dirt road 3 miles to the fork in the road. At the fork, turn left and drive 1.1 miles until it forks again. Take the left fork .8 miles to the trailhead gate.
Dusy-Ershim OHV Route: This backcountry route is classified as Most Difficult and traverses 31 miles between the John Muir and Dinkey Wilderness areas. Driving time for the entire route is 2 to 3 days. This route is recommended for advanced drivers, and not recommended for full size pickups, long wheel base vehicles or for traveling alone. To get there take Hwy 168 east of Clovis to the Dinkey Creek Road (just before you get to Shaver Lake). Follow the Dinkey Creek Road east to Dinkey Creek. At Dinkey Creek take the McKinley Grove Road toward Courtright Reservoir. At the Courtright Road, turn left and head north towards Courtright Reservoir. Cross the dam on the east side of the lake and stay on the road to the Dusy-Ershim OHV route sign. The route begins at 8,400 feet elevation, with many open rocky areas. Be aware that portions of the trail cross large granite slabs and are marked with rocks. Elevation rises to 10,000 feet at Thompson Lake, remaining at the 9,000 to 10,000 feet for the rest of the route.
Spanish OHV Route: This route is classified as More Difficult. An easy route for experienced drivers and a challenge for beginning drivers. The route encompasses loose dirt, some granite, a few rocks, and a little uphill. The route is 3.5 miles long and takes 4 hours to drive. This route is not recommended for van type 4WD vehicles or full size pickups, due to some tight maneuvering near the wilderness boundary. To get there take Hwy 168 east of Clovis to the Dinkey Creek Road (just before your get to Shaver Lake). Follow the Dinkey Creek Road east to Dinkey Creek. At Dinkey Creek take the McKinley Grove Road 17 miles to Wishon Dam. Follow the road 2.5 miles past the Dam and turn at the Crown Valley Trailhead. Follow the road 1.5 miles to the Spanish Route, it starts a short distance beyond Rancheria Creek.