Sims Flat Campground (CA) is a national park campground at Shasta-Trinity National Forest in Unknown. Reservations are managed through Recreation.gov. Instead of refreshing Recreation.gov, let Campsite Tonight watch for cancellations and automatically drop an open site into your cart the instant one frees up.
Sims Flat Campground (CA) 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.
Sites here are tent or walk-in (no RV access). Campers rate it 4.5/5 across 138 reviews.
Total reservations in May — 2025: 2
Address
Unknown
Coordinates
0.0000, 0.0000
Very high demand - sites typically fill up immediately when the booking window opens. Plan to book the moment reservations open.
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