Gambrill State Park

High atop Catoctin Mountain, Gambrill State Park is a convenient outdoor escape located just 15 minutes from Downtown Frederick. With some of the best hiking, mountain biking, camping, and scenic overlooks in Maryland, Gambrill State Park is a go-to destination for outdoor recreation year-round. This guide covers the park’s key trails, camping options, must-see views, and everything you need to plan your visit.

Scenic Overlooks & Mountain Views

Gambrill State Park spans two distinct areas: High Knob at roughly 1,600 feet in elevation and Rock Run at the base of the mountain. The park is also home to three stone overlooks at High Knob, each offering a unique view of the Frederick County landscape.

The Frederick Overlook is the most iconic: a sweeping stone platform with a grand staircase and wide-open views of the valley below. The Middletown Overlook faces west, making it a prime spot to catch dramatic afternoon light and expansive sky. The North Frederick Overlook, just off Gambrill Park Road, looks out over the eastern ridgeline of Catoctin Mountain.

Pro Tip: All three overlooks close at sunset, so time your visit accordingly.

The North Frederick Overlook at Gambrill State Park

Hiking in Gambrill State Park

Gambrill State Park is one of the premier spots for hiking on Catoctin Mountain, with more than 16 miles of trails spread across two areas of the park. Its two main routes offer very different experiences: the White Oak Trail provides a beginner‑friendly loop through mature hardwood forest, while the Yellow Poplar Trail offers a longer, more challenging route suited for hikers looking to cover more ground.

Beyond these, the park offers multi-use trails for mountain bikers, horseback riders, and hikers, making it one of the region’s more versatile trail systems. To be sure a trail fits your ability or pursuit, download or pick up a current trail map before you head out.

Gambrill also connects visitors to the broader Catoctin Mountain hiking corridor, with the Catoctin National Recreational Trail that extends north to Catoctin Mountain Park.

Trail Descriptions from Gambrill State Park: 

• White Oak (1 mile) – Easy – White blaze – This easy trail is open to hikers only (no mountain bikes), and is a good choice for families with small children.
• Red Maple (1 mile) – Easy – Red blaze – Fairly easy to walk, this trail connects the campground with the rest of the park. One short section of the trail is somewhat steep.
• Green Ash (2 miles) – ​Moderate – ​Green blaze – ​Visitors seeking an adventure love this trail. There are several steep slopes and very little level ground, making this trail a challenge.
• Black Locust (3 miles) – Difficult – Black blaze – This trail truly showcases the beauty of Gambrill State Park, from its wooded slopes to the breathtaking views of both Frederick to the east and Middletown valley to the west. The trail passes through the High Knob scenic area, mixing several steep slopes with fairly level areas.
• Yellow Poplar (7 miles) – Moderate – Yellow blaze – The longest of the Gambrill trails, this trail is only moderately difficult. Visitors who have several hours can hike up the mountain and out into the far reaches of the park. Enjoy the view from North Frederick Overlook as you continue north along a moderately sloped ridgeline walk.
• Catoctin National Recreation Trail (28 miles) – Difficult – Blue blaze – This trail traverses Gambrill State Park, the Frederick City Watershed, Cunningham Falls State Park and Catoctin Mountain National Park. It ends at Mt. Zion Road, 1.3 miles north of Owens Creek Campground in Catoctin Mountain National Park. The Appalachian Trail may be reached by traveling west on Mt. Zion Road for two additional miles to Raven Rock Road. Backcountry camping on the Catoctin Trail is not permitted. Family camping is available at Gambrill State Park, Cunningham Falls State Park in the Manor and Houck Areas and Catoctin Mountain Park. The Potomac Appalachian Trail Club maintains this trail.

Camping & Outdoor Activities

Rock Run Area Campground is the park’s primary overnight option, open April through October, and offers a mix of accommodations, including nine tent‑only sites, six sites with electrical hookups suitable for RVs or campers, and four cabins for visitors who prefer a roof overhead. Campers have access to fire pits, a community bathhouse, and a dump station, and reservations are recommended during peak season.

Beyond camping, the park offers a solid lineup of outdoor activities. Anglers can cast a line at the Rock Run pond, an accessible spot for all ages. Both the High Knob and Rock Run areas feature picnic shelters, such as the historic Tea Room at High Knob. Wildlife viewing and birding are popular throughout the forested ridgeline, and photographers often head to the overlooks during golden hour; just be sure to arrive before sunset. The park also welcomes cyclists and equestrians, with designated routes available for both.

Visitor Information & Getting There

The park is open year‑round, with hours varying by season: from April through October, gates open at 8 a.m. and close at sunset, while November through March hours shift to 10 a.m. to sunset. Although some vehicle access points may close during winter or severe weather, the park remains accessible to hikers on foot.

Entry fees are $3 per vehicle for Maryland residents and $5 per vehicle for out‑of‑state visitors, with additional charges for camping and shelter reservations. Pets are welcome throughout the park as long as they remain leashed.

To reach the park from Frederick, take I‑70 West to US‑40, then continue west on US‑40 for about six miles before turning right onto Gambrill Park Road. Follow it for one mile to the main entrance. High Knob and Rock Run are accessed via separate internal roads, so be sure to check signage once you arrive.

A trip to Gambrill State Park offers an easy escape into the outdoors. Plan a day visit or a full weekend and start exploring everything the park has to offer.