Southwest of Lander in the Shoshone National Forest, the Petes Lake Trail (#720) is a 7.5 mile 4WD route open to ATV riding. You can actually continue another 10 miles past Petes Lake on the Shoshone Lake Trail if you feel like an extended ride.
To reach the trailhead from Lander, head south on SR131 for about 10 miles to the Middle Fork Guard Station.
Note: As of September 2007, ATV riding is only permitted on designated Forest Service roads. To obtain a map of designated roads, contact the Forest Service HQ at (307) 527-6241.
Overall, Petes Lake Trail is the 24th most popular ATV riding trail of all 27 ATV trails in Wyoming.