Nestled in the Catoctin Mountains just minutes from downtown Frederick, Maryland, Gambrill State Park offers a scenic escape for RV travelers and outdoor enthusiasts alike. The Rock Run Area campground features sites accommodating RVs and trailers, complete with electrical and water hookups, pull-through sites, a dump station, picnic tables, grills, showers, restrooms, and a playground — making it a comfortable base for families and adventure seekers. Over 16 miles of multi-use trails wind through forested ridgelines, ranging from easy walks to challenging climbs with breathtaking overlooks of the Frederick valley and the Middletown countryside. Anglers will appreciate the free fishing pond stocked with largemouth bass, bluegill, and channel catfish — no fishing license required. The High Knob nature center provides educational exhibits on local wildlife and Civilian Conservation Corps history. Mountain biking and horseback riding are also popular throughout the park. With its convenient location near Frederick's vibrant downtown, Civil War historic sites, and the Appalachian Trail corridor, Gambrill State Park blends natural beauty with accessibility. Whether you're seeking a weekend of trail hiking or a peaceful mountain retreat in western Maryland, this state park campground delivers a well-rounded outdoor experience.