Needles Highway, Black Hills (SD)
The Road: South Dakota Highway 87, which runs from U.S. Route 385 at the southern end to Hill City on the north.
The Ride: This spirited ride carves through Custer State Park and Wind Cave National Park and links to Mt. Rushmore National Memorial.
When To Go: Early August, when all roads lead to the Sturgis Motorcycle Rally, one of the biggest bike gatherings on the planet.