Little Pool Hiker-Biker Campsite at mile 120.

4 of the C&O Canal towpath offers free, primitive camping accessible only by foot, bicycle, or horseback, with basic amenities including a chemical toilet, picnic table, grill, and water (available mid-April through mid-November).

The site accommodates up to eight people per night on a first-come, first-served basis with a one-night stay limit and provides canoe/kayak access to the nearby Potomac River.

Located near Hancock, Maryland, a footbridge just a half-mile south connects to a parking area off I-70 for easy access to the towpath.