Horsepen Branch is a free, first-come, first-served hiker-biker campsite located at mile 26.

1 of the C&O Canal towpath along the Potomac River, offering tent camping with a chemical toilet, picnic table, fire ring, and non-potable well water (available mid-April to mid-November).

The site is not accessible by vehicle and requires hiking or biking to reach; stays are limited to one night.

Paddlers and hikers should note that water must be filtered, chemically treated, or boiled before use, and the site sits directly along the Potomac River with scenic river views.