| Calico Rocks hiker-biker campsite (C&O Canal towpath mile 47.6) | 6.6 | Free | Washington Run (stream) | 0.4 mi to Point of Rocks | — |
| Indian Flats hiker-biker campsite (C&O Canal towpath mile 42.5) | 6.8 | Free | Little Monocacy River (stream) | 1.7 mi to Dickerson | — |
| Bald Eagle Island hiker-biker campsite (C&O Canal towpath mile 50.3) | 7.1 | Free | Little Catoctin Creek (river) | 1.1 mi to Potomac Gateway | — |
| Marble Quarry hiker-biker campsite (C&O Canal towpath mile 38.2) | 11 | Free | Potomac River (river) | 1.4 mi to Martinsburg | — |
| Crampton's Gap Shelter (Appalachian Trail, South Mountain, MD) | 13 | Free | Israel Creek (stream) | 0.8 mi to Locust Valley | — |
| Ed Garvey Shelter (Appalachian Trail, South Mountain, MD) | 13 | Free | — | 1.3 mi to Brownsville | — |
| Turtle Run hiker-biker campsite (C&O Canal towpath mile 34.4) | 14 | Free | — | 3.3 mi to Leesburg | — |
| Rocky Run Shelter (Appalachian Trail, South Mountain, MD) | 14 | Free | — | 1.0 mi to Park Hall | — |
| Dahlgren Backpackers Campground (Appalachian Trail, South Mountain, MD) | 15 | Free | — | 0.4 mi to Zittlestown | — |
| Dispersed camp — Frederick County, MD | 16 | Free | — | 0.8 mi to Zittlestown | — |
| Chisel Branch hiker-biker campsite (C&O Canal towpath mile 30.5) | 16 | Free | Cabin Branch (stream) | 1.3 mi to Lansdowne | — |
| Horsepen Branch hiker-biker campsite (C&O Canal towpath mile 26.1) | 18 | Free | Horsepen Branch (stream) | 1.7 mi to Countryside | — |
| Huckleberry Hill hiker-biker campsite (C&O Canal towpath mile 62.9) | 18 | Free | Elks Run (stream) | 1.1 mi to Pleasantville | — |
| Pine Knob Shelter (Appalachian Trail, South Mountain, MD) | 18 | Free | Little Beaver Creek (stream) | 0.6 mi to Fairmount | — |
| Annapolis Rock Campground (Appalachian Trail, South Mountain, MD) | 19 | Free | Little Beaver Creek (stream) | 1.4 mi to Greenbrier | — |
| Pogo Memorial Campground (Appalachian Trail, South Mountain, MD) | 19 | Free | Black Rock Creek (stream) | 1.2 mi to Bagtown | — |
| Horseshoe Bend hiker-biker campsite (C&O Canal towpath mile 79.2) | 22 | Free | — | 1.0 mi to Mercersville | — |
| Killiansburg Cave hiker-biker campsite (C&O Canal towpath mile 75.2) | 22 | Free | Potomac River (river) | 1.0 mi to Snyders Landing | — |
| Ensign Cowall Shelter (Appalachian Trail, South Mountain, MD) | 22 | Free | Beaver Creek (stream) | 1.1 mi to Pleasant Valley | — |
| Swains Lock hiker-biker campsite (C&O Canal towpath mile 16.6) | 23 | Free | Lock 21: Swains Lock (water) | 2.1 mi to Potomac | — |
| Big Woods hiker-biker campsite (C&O Canal towpath mile 82.7) | 23 | Free | Marsh Run (stream) | 1.1 mi to Potomac Valley Farms | — |
| Raven Rock Shelter (Appalachian Trail, South Mountain, MD) | 25 | Free | Rattling Run (stream) | 0.7 mi to Edgemont | — |