South Marcum Campground is a national park campground at Rend Lake in Franklin County, Illinois. Reservations are managed through Recreation.gov. Campsite Tonight watches Rend Lake around the clock and automatically adds an open site to your Recreation.gov cart the moment a cancellation appears — so you just check out.
South Marcum Campground is in very high demand — sites here routinely sell out well in advance. Cancellations are often the best way in, which is exactly what Campsite Tonight watches for.
The campground accommodates RVs and trailers up to 76 ft. Campers rate it 4.6/5 across 163 reviews.
Other campgrounds at Rend Lake include Dale Miller Youth, South Marcum Day Use, Spillway Group Area, North Marcum Day Use Area and Dam West Area (day-use).
Total reservations in March — 2023: 56 · 2024: 125 · 2025: 109
Address
Benton, Illinois
Coordinates
38.0338, -88.9402
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
Rend Lake
Rend Lake
Rend Lake
Rend Lake
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Rend Lake
Rend Lake
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