Bureau of Land Management, Wyoming.
This area consists of roads that start in the sagebrush flats and climb among the pine, fir, and aspen. Choose a variety of road surfaces from maintained graveled to undeveloped two-tracks. Some private land is on the mountain so ask permission before riding off of public roads. Also, there may be active logging operations on the mountain so be alert for equipment and logging trucks. A variety of rides can be found from a 31-mile loop ride based out of Prior Flat Campground (no water available) to shorter rides on the mountain. Trips can last one hour to all day. Wildlife viewing includes deer, elk and pronghorn.
From State Highway 487, 22 miles north of Medicine Bow, take the State Highway 77 turnoff. Proceed nine miles to Carbon County Road 102. Head west two miles to BLM Road 3115 or continue another seven miles to the western junction of BLM Road 3115 at Prior Flat Campground. BLM Road 3115 is a loop road through the Shirley Mountains.