No detected openings were recorded in the last 90 days. Campsite Sniper monitors Camp Greentop continuously and will alert you if that changes.
Of the 45 tracked site-nights (Sep 18 – Nov 1, 2026): 25 open for online reservation · 6 reserved · 13 closed · 1 unavailable (cause unspecified).
Where the open windows are
Load status
Sep 18 – Nov 1, 2026Of the open site-nights on mapped sites, 18 fall on weekdays and 7 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Nov 2026November shows no online availability. 0 of 1 tracked site-nights are open there — 1 unavailable.
Holiday windows
Sites open per night · of 1 site| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open | |
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: no online availability on any tracked night.
Availability
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| Camp Greentop | 25 |
This site currently has 25 site-nights available.
Next windows
As of Sep 18, 2026 snapshotThe next bookable night is Sep 18; the first open weekend starts Sep 18. Campsite Sniper can watch later dates for you.
Stays and site detail
Multi-night stays. 5 2-night, 5 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 18 at site Camp Greentop.
All 1 site with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| Camp Greentop | Not recorded | None | 25 | 5 nights | Sep 18, Sep 19, Sep 20, Sep 21, Sep 22, Sep 26, Sep 27, Sep 28, Sep 29, Sep 30, Oct 4, Oct 5 +13 more |
About Camp Greentop
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.
Recreation
A variety of hiking trails and picnic facilities are within walking distance of Camp Greentop. The camp includes an athletic field and a swimming pool, open from Memorial Day to Labor Day. Fishing is available by permit within Catoctin Mountain Park and Cunningham Falls State Park, just 3 miles (5 km) from the Catoctin Mountain Park Visitor Center. Cunningham Falls also offers swimming and boating.
Contact the Catoctin Mountain Park Visitor Center at (301) 663-9388 for additional information on recreation and program opportunities.
Facilities
Camp Greentop will accommodate up to 150 overnight guests in a variety of cabins. The camp has five shared bathhouses with flush toilets, hot showers, and sinks. It also has a full commercial kitchen, dining hall, recreational hall, seasonal outdoor swimming pool, campfire ring and athletic field.
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. The camp has a large group dining hall, a commercial kitchen, and a recreation hall. The dining hall, kitchen, and recreation hall have heating and air conditioning. The large cabins and lodge have electricity and ceiling fans. The smaller cabins have private bathrooms, while the remaining cabins use shared bathhouses located throughout the camp.
The dining hall and recreational hall contain approximately 40 tables and 100 chairs. The recreation hall has a small stage. The commercial kitchen offers various appliances, including a freezer, refrigerator, three ranges, a convection oven, ice machine, microwave, toaster, and dishwasher. The kitchen contains multiple storage spaces.
The camp has a swimming pool, open from Memorial Day to Labor Day, with an adjacent bathhouse that includes flush toilets, hot showers, and sinks.
Outdoor amenities include a grass athletic field and a campfire ring with wooden bench seating. Free firewood is provided by the park. Use of firewood from outside the park is not allowed.
No internet access or Wi-Fi available. Cellular service coverage is best on AT&T or Verizon networks.
Trash facilities include a waste and recycling dumpster
Guests are responsible for the cleaning and sanitation of the entire facility, including the bathhouses and kitchen. The park provides cleaning equipment, including trash cans, mops, buckets, brooms, dust mops, whisk brooms, vacuum cleaners, and dust pans, as well as limited cleaning chemicals. Groups must ensure they have all of the needed cleaning supplies and may choose to contract with a professional for cleaning services. The cleaning of all facilities must be completed by check-out time, and the group leader must remain for a walk-through of the entire camp with a park employee.
Catoctin Mountain Park is committed to sustainable park operations and strongly encourages park visitors to reduce their consumption of energy and generation of waste. There is single-stream recycling available in Camp Greentop.
Natural Features
Catoctin Mountain Park, established in 1936, is located along the eastern portion of the Blue Ridge Mountains. The 5,890.36 acre (2384 ha) mixed hardwood forest includes abundant wildlife, freshwater streams and interesting geologic formations. Camp Greentop, shaded by large trees, includes a grass field and outdoor fire circle. A variety of trails (including some accessible trails), interpretive exhibits and picnic areas are within walking distance of Camp Greentop.
Nearby Attractions
Catoctin Mountain Park is located near many historical and cultural sites. Visitors will enjoy nearby:
Appalachian National Scenic Trail (8 miles/13 km)
Monocacy National Battlefield (18 miles/29 km)
Antietam National Battlefield (26 miles/45 km)
Potomac Heritage National Scenic Trail (26 miles)
Eisenhower National Historic Site and Gettysburg National Military Park (20 miles/32 km)
Chesapeake & Ohio Canal National Historical Park (28 miles/45 km)
Harpers Ferry National Historical Park (37 miles/60 km)
Other attractions include Catoctin Wildlife Preserve and Zoo and Cunningham Falls State Park.
For more information visit the Tourism Council of Frederick County.
Getting there
For GPS Use Only: The street address is 15001 Park Central Road, Thurmont, MD, 21788. This is NOT a mailing address. The mailing address for Camp Greentop is: Catoctin Mountain Park, Camp Greentop, 6602 Foxville Road, Thurmont, MD 21788 (coordinates: 39° 38' 43.9908" N 77° 28' 34.2588" W) From Washington, DC: Take the George Washington Memorial Parkway north to I-495 to I-270 north 27 miles (43.5 km) to Frederick, MD. Take Route 15 for 17 miles (27 km) north to Thurmont, MD. Take Route 77 West (the exit sign is marked Catoctin Mountain Park). Travel approximately 6 miles (9.6 km) west on 77 (you will pass Park Central Road and the park visitor center). Turn right onto Foxville-Deerfield Road. As the road forks, turn right onto Manahan Road. Continue approximately 3/4 mile and turn right on Park Central Road. Drive approximaley 3/4 mile and turn right into Camp Greentop. Park in the large paved parking lot. From Baltimore, MD: Take I-695 beltway to I-70 West to Frederick, MD. Take Route 15 North to Thurmont, MD. Take Route 77 West (the exit sign says Catoctin Mountain Park.) Travel approximately 6 miles (9.6 km) west on Route 77 (you will pass Park Central Road and the park visitor center). Turn right onto Foxville-Deerfield Road. As the road forks, turn right onto Manahan Road. Continue approximately 3/4 mile and turn right on Park Central Road. Drive approximaley 3/4 mile and turn right into Camp Greentop. Park in the large paved parking lot. From Hagerstown, MD: take I-70 East to Route 66 North for 7 miles (11.2 km). Turn right onto Route 64 (East) for 1 mile (1.6 km) then turn right at a traffic light onto Route 77 East for approximately 4 miles (6.4 km). Turn left onto Foxville-Deerfield Road. As the road forks, turn right onto Manahan Road. Continue approximately 3/4 mile and turn right on Park Central Road. Drive approximaley 3/4 mile and turn right into Camp Greentop. Park in the large paved parking lot. From Gettysburg, PA: Take Route 15 South. In Thurmont, MD, exit onto Route 77 West (the exit sign says Catoctin Mountain Park). Travel approximately 6 miles (9.6 km) west on 77 (you will pass Park Central Road and the park visitor center). Turn right onto Foxville-Deerfield Road. As the road forks, turn right onto Manahan Road. Continue approximately 3/4 mile and turn right on Park Central Road. Drive approximaley 3/4 mile and turn right into Camp Greentop. Park in the large paved parking lot.
View on Recreation.gov ↗ Get directions ↗
Photo gallery
FAQ
How do I get a reservation at Camp Greentop?
Reservations for Camp Greentop are made through Recreation.gov. 25 of 45 tracked site-nights are currently open (55.6%). Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
Can I get a multi-night stay at Camp Greentop?
5 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 18 at site Camp Greentop. Confirm and book on Recreation.gov.
Which month has the most availability at Camp Greentop?
October 2026, with 15 open site-nights in the current snapshot of 31.
When is the next open date at Camp Greentop?
As of the Sep 18, 2026 snapshot: the next open date is Fri, Sep 18 and the next open weekend starts Fri, Sep 18. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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