The George S. Mickelson Trail is a rail trail in the Black Hills region of South Dakota. 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. Intermediate points along the route include the towns of Custer and Hill City, and a short branch provides access to the city of Lead.