The main trail route extends 108.8 miles (175.1 km), from Edgemont to Deadwood, with approximately nine miles of additional branch trails, including a three-mile (5 km) paved link from Custer to the Custer State Park completed in 2007.
There are fifteen established trailheads spaced along the route, all of which include vehicle parking, self-sale trail pass stations, vault toilets, and tables.
[2] The trail is maintained by the South Dakota Department of Game, Fish, and Parks.
The trail is named after George S. Mickelson, the South Dakota governor who helped spearhead the project.
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