Length: About 360 miles.
When to go: Popular year-round.
Words to the wise: Some sections of the Peter Norbeck Scenic Byway are closed in winter.
Nearby attractions: Bear Butte State Park, northeast of Sturgis. Devils Tower National Monument, Wyoming. Wounded Knee, south of Badlands National Park.
Visitor centers: Badlands National Park. Mt. Rushmore National Memorial. Wind Cave National Park. Jewel Cave National Monument.
Further information: South Dakota Office of Tourism, 711 E. Wells Ave., Pierre, SD 57501; tel. 800-732-5682, www.travelsd.com.