Antietam Creek Campsite — how to get a site when it's sold out

Booking Antietam Creek Campsite

Sites at Antietam Creek Campsite are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.

Site facts

Total sites	20
Site types	Tent only
Location	Williamsport, MD
Book through	Recreation.gov
Official listing	Recreation.gov

The cancellation play at Antietam Creek Campsite

Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.

itOpened scans the Recreation.gov calendar for Antietam Creek Campsite around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.

Other campgrounds in Chesapeake & Ohio Canal National Historical Park

Spring Gap Campground	Cancellation alerts available
McCoy's Ferry Campground	Cancellation alerts available
Fifteen Mile Creek Campsite	Cancellation alerts available
Paw Paw Tunnel Campsite	Cancellation alerts available
Marsden Tract Group Campsite	Cancellation alerts available
Carderock Recreation Area Pavilion	Cancellation alerts available

Page data refreshed 2026-10-29. Site facts come from the official directory listing for Antietam Creek Campsite; cancellation statistics come from our own scanning logs.