Hints for a smooth reservation process:
*Have vehicle and camping unit tag numbers ready.
*Know the names of all occupants before booking.
*New reservable inventory becomes available at 9 a.m. on days when the call center is open. View Call Center hours.
** Arrival dates earlier than the online-reservation-window may also be available at the campground.
*** Some sites may be available only from the campground on a first-come-first-served basis.
Gambrill State Park is a beautiful mountain park, located on the ridge of the Catoctin Mountains in Frederick County. Its most popular features are the 16 miles of trails for hiking, and mountain biking. The park is separated into two areas, the Rock Run area and the High Knob area. The Rock Run Area offers a cozy family-style campground, a picnic area and a small pond for fishing. The High Knob Area offers picnic shelters and stone overlooks with scenic views of the valley below.
Reservations can be made for today and can be made up to 365 Day(s) in advance.
Reservations can be made for today and can be made up to 365 Day(s) in advance.
Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
2026 Reservable Dates
2027 Reservable Dates
- Beaches
- Biking Trails
- Boat Ramp
- Cabins
- Canoeing/Kayaking
- Dump Station
- Electric Hookups
- Equestrian Trails
- Fishing
- Food
- Hiking / Walking Trails
- Hunting
- Lodge/Yurt
- Mini Cabins
- Mountain Biking Trails
- Park Store
- Pet Loops
- Picnic Shelters
- Picnic Tables
- RV Sites
- Restrooms
- Shooting Range
- Showers
- Swimming Pool
- Water and Sewer Hookups
- Wheelchair Accessible
- X-Country Ski / Snowshoe
- Youth Group Camping
Cancel/Change Policies for all Resource Types
Facility Rates*
Apr 10 2026 -
Oct 24 2026
Apr 09 2027 -
Oct 30 2027
*Displayed rates are base rates and do not reflect discounts, surcharges (holiday/weekend/residency) or incremental charges, such as pet fees.
Prices are subject to change without notice, and all transaction fees, penalties, and donations are non-refundable.
39.47861, -77.49139
39°28'43"N, 77°29'29"W
Location: Gambrill State Park is located along Gambrill Park Road off of MD RT 40 just west of Frederick, MD.
Park Headquarters: 8602 Gambrill Park Road Frederick MD 21702
Rock Run Campground Address: 8002 Gambrill Park Road Frederick MD 21702
Tea Room & High Knob area: 8346 High Knob Road Frederick, MD 21702







