Montana › Sweet Grass County › Custer Gallatin National Forest

Aspen Campground

Open

Open year-round, weather permitting. Access may be limited during fall and winter due to snow. Potable water is only available from Memorial Day through Labor Day. First-come, first-served with self-service fee station.

About

Aspen Campground is a small, rustic campground nestled in the Main Boulder area of the Yellowstone Ranger District within Custer Gallatin National Forest. Located along Main Boulder Road, this 8-site campground offers a peaceful setting surrounded by Montana's mountain landscapes and provides convenient access to the Boulder River for fishing. Each campsite features a picnic table and fire ring with grill for cooking. Vault toilets are available on-site, and potable water is accessible from a hand pump from Memorial Day through Labor Day. The campground has a self-service fee station for payment. Bear boxes are provided for food storage. The campground is open year-round, though access becomes limited during fall and winter due to snow accumulation on the access road. The road is not suitable for vehicles longer than 32 feet, making this campground better suited for smaller RVs, trailers, and tent campers. Nearby Natural Bridge State Park and numerous hiking trails make this an ideal base camp for exploring the greater Boulder River watershed.

Directions

25 miles south of Big Timber on US 298, then 8.5 miles south on Main Boulder Road (County Road 212). Campground road not suitable for vehicles longer than 32 feet.