State Park / State Forest
Near Custer, South Dakota: $25–$45/night, rigs to 35 ft. Open May through September. Book 12 months ahead via SD State Parks portal.
State Park / State Forest
Managing authority
Near Custer, South Dakota
How much does camping at Sylvan Lake Campground (Custer SP) cost, and when is it open?
Sylvan Lake Campground (Custer SP) near Custer, South Dakota (State Park / State Forest) — camping fee $25–$45/night, season May through September, RV size limit Up to 35 ft. Reservations: 12 months ahead via SD State Parks portal — book direct through the official channel.
The numbers
Fee range
$25–$45/night
Season open
May through September
RV size limit
Up to 35 ft
Reservation window
12 months ahead via SD State Parks portal
The insider read
Iconic granite-spire backdrop. Black Elk Peak (highest east of the Rockies) trailhead. Needles Highway scenic drive 10 min.
Original analysis from PickRV — synthesised from public sources you can verify, pulling the operational details competitor guides typically skip.
Verify at gfp.sd.govOn site
Book it right
PickRV doesn't handle campground bookings — reserve direct through the official channel so policies and cancellations flow through one record.
Opens gfp.sd.gov
Every fact above is sourced from the managing agency's canonical page. Cross-check fee, season, and size limit before you depend on them.
Match the campground's size limit and hookup level to a vehicle category, then plan the rest of the trip.
Keep exploring
Near Custer
StateInsider tip · Closer to Custer town than Sylvan Lake. Bison herd (1,300 head) on the Wildlife Loop Road dawn drive — start at 6am. Buffalo Roundup (last Friday September) is the unique-fish event.
Near Hill City
PrivateInsider tip · Closest full-hookup camp to Mt Rushmore (5 min). Free shuttle to the monument. Sturgis week (Aug) books a year+ out and prices spike 3x.
Near Rapid City
USFSInsider tip · Pactola Reservoir is the swim + paddle alternative to Sylvan Lake. Less crowded than state-park camps. Mickelson Trail (108-mile rail-trail) bike access.
Near Yankton
StateInsider tip · Missouri River reservoir on SD/NE border. Largest state-rec area camp in SD. Sailing-friendly winds.
Nearby & related
Sourced costs, campground directories, and the places worth a detour — the next layer of South Dakota trip planning.
Before you go
South Dakota rules
Verified 2026-05-10