South Dakota's most dramatic road: 14 miles of tight curves, one-lane tunnels blasted through granite spires, and open meadows in Custer State Park. The Needles are Cathedral Spires of Harney Peak granite that erupt from the Black Hills, and SD-87 threads directly through them — creating a riding experience unlike anything else on the continent.
Clone it to your planner, customize dates and stops, then ride. All free.