Catoctin Mountain Park · Maryland
Overview Located on the National Register of Historic Places, Camp Greentop is a perfect location for organized groups to hold large events, retreats, or conferences. The camp has space for 150 people to sleep on twin beds. There are 12 cabins that sleep 10 each, one lodge that sleeps 12, and three smaller cabins.
Sites at Camp Greentop 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.
| Total sites | 1 |
|---|---|
| Site types | Group |
| Hookups | Electric hookups at some sites |
| Location | Thurmont, MD |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
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 Camp Greentop 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.
| Owens Creek Campground | Cancellation alerts available |
|---|---|
| Camp Misty Mount | Cancellation alerts available |
| Poplar Grove Youth Group Campground | Cancellation alerts available |
| Adirondack Shelters | Cancellation alerts available |
| Camp Greentop Dining Hall and Rec Hall | Cancellation alerts available |
| Camp Round Meadow | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for Camp Greentop; cancellation statistics come from our own scanning logs.