Wolf Den Run State Park is Maryland's first and currently only park that caters to four-wheeling. There are three designated areas, each with numerous trails. A permit is required. The trails are open year-round except for deer firearms season, the two weeks beginning the first Saturday after Thanksgiving. There is no camping at any of the three offroad locations, but a campground is 1 mile northwest of Huckleberry Roaks Area along N Hill Road.
Trail 0109 is in the Huckleberry Rocks Area. This easy, short trail takes you past the OHV "racetrack" area. It's a bit muddy with a couple of puddles, nothing too challenging.