Bison graze the open grassland along Custer State Park's Wildlife Loop. You stay in the van and wait while a herd crosses, because this is their road. A group feeding next to the pavement can hold the loop for a stretch, and you watch from the seat.
Needles Highway is granite at close range, the tunnels low and narrow, and Sylvan Lake is the water at the far end. As of September 2026, Sylvan Lake Campground is not suitable for RVs over 27 feet, and large RVs or vehicles towing campers should skip those tunnels and take SD Highway 89. If you want more sleeping length than a campervan, look at RV rentals in Rapid City.
The town of Custer sits just outside the park. Game Lodge Campground is the first-night pad on US Highway 16A by the visitor center, with tent pads, electric sites, and sites without hookups. As of September 2026, reservations open up to a year ahead, and Center Lake Campground takes same-day reservations if you arrive without a site. Lock that overnight before you book the van.
Late September, Custer State Park runs its Buffalo Roundup and Arts Festival on the same ground you came to camp on. The event fills the public sites that weekend, so if that is your window, the overnight is the scarce piece.
South toward Hot Springs, Wind Cave National Park's Elk Mountain Campground sits between ponderosa pine and open prairie, with sites capped at 36 feet as of September 2026.
Mount Rushmore National Memorial
Mount Rushmore is the carved granite faces against open sky, a daylight walk, and Keystone is the town on that road. As of September 2026, camping is not available at the Memorial and overnight parking is not permitted within its boundaries.
Crazy Horse Memorial is a mountain still being carved, the world's largest mountain carving in progress according to the memorial. You see it from the viewing terrace. Hill City is the town on that drive.
Badlands National Park
East of the hills, the grass breaks and the ground falls into striped buttes. Badlands Loop Road, Highway 240, runs the rim, and Pinnacles Overlook and Yellow Mounds Overlook are the named stops. The road is paved two-lane and appropriate for all motor vehicles, with steep passes and slower stretches. Wall is the town on the east side.
Cedar Pass Campground is the reserved night. As of September 2026, reservations for the busy summer season open the first week of March, booked through recreation.gov.
Sage Creek Campground is free and first-come on an unpaved road that can close after winter storms or spring rain, and RVs greater than 18 feet are prohibited there as of September 2026.
Deadwood, Spearfish, and the Sturgis rally are in the northern hills and belong to the rest of South Dakota.