The entire Mickelson Trail is 109 miles long and has a total of 15 trailheads, 4 rock tunnels, and several railroad bridges. The surface of the trail is mostly crushed limestone and packed gravel, along with some partial dirt roads. The trail is conveniently accessed behind the Pringle fire station and where you'll then journey northward through the Black Hills passing by old barns and granite formations before getting to the White Elephant Trailhead. Be sure to purchase a Mickelson Trail pass at a self-service station along the trail or online.