Within Chesapeake & Ohio Canal National Historical Park, the Swains Lock Hiker-biker Overnight Campsite operates as one of the few canal trail camping spots accessible by car. The National Park Service maintains this free site at mile marker 16, where a 500-foot walk from the parking lot leads to five designated overnight spots and three day-use areas.
Campers set up along the Potomac River with fire rings and picnic tables at each site. The location sits directly adjacent to the heavily-trafficked C&O towpath, where cyclists, runners, and walkers pass throughout daylight hours. Mark M. notes the campground "appears well maintained especially for free" with river views from most sites. Wildlife includes resident Canada geese and wild turkeys visible across the water on the Virginia shoreline.
The site provides treated city water and portable toilets, though campers must pack out all trash as no collection service operates here. Fishing draws visitors to the river access, and Great Falls sits less than three miles north along the towpath for day trips. A rental lock house across from the camping area offers an alternative accommodation option. Shari G. found the afternoon light "perfect for solar charging our power bank."
Sites operate on a first-come, first-serve basis and fill quickly on weekends, particularly during warmer months. The parking area accommodates approximately eight vehicles. Road access distinguishes this spot from more remote canal campsites, though it also increases both vehicle traffic and the potential for less considerate behavior from some visitors. No pets are permitted at this location.
For those seeking additional overnight options in the region, nearby alternatives include Marsden Tract Group Campsite and Lake Fairfax Campground.
Description
Mile 16.6 - Hiker-biker campgrounds are located along the towpath approximately every 5-7 miles. No fee or reservation required. Overnight stays are limited to one night. All sites include a chemical toilet, picnic table, grill, and water. Please Note: Water at hiker-biker campsites is non-potable. Water is not treated and not for drinking or cooking. If you use this water, you are advised to filter, chemically treat, or boil before use. Water is turned off from mid-November to mid-April each year.
Location
Private CampgroundSwains Lock Hiker-biker Overnight Campsite — Chesapeake and Ohio Canal National Historical Park is located in Maryland
Directions
More information is available at http://www.nps.gov/choh/.
Coordinates
39.031002 N
77.244579 W
Connectivity
- T-MobileLTESome Coverage
- VerizonLTESome CoverageVerified by 1 userLast on 12/11/25
- AT&T5GGood CoverageVerified by 3 usersLast on 3/12/26
Connectivity
- T-MobileLTESome Coverage
- VerizonLTESome CoverageVerified by 1 userLast on 12/11/25
- AT&T5GGood CoverageVerified by 3 usersLast on 3/12/26
Access
- Walk-InPark in a lot, walk to your site.
- Boat-InSites accessible by watercraft.
Site Types
- Tent Sites
- Standard (Tent/RV)
- Group
Features
For Campers
- Market
- Phone Service
- Toilets
- Alcohol
Drive Time
- 28 min from Washington, DC
- 45 min from Baltimore, MD
- 1 hr 2 min from Hagerstown, MD
- 1 hr 15 min from Winchester, VA


















