Rocky-Stream Bed Trail is a hiking and biking trail in Frederick County, Maryland. It is within Gambrill State Park. It is 0.6 miles long and begins at 723 feet altitude. Traveling the entire trail is 1.2 miles with a total elevation gain of 201 feet. The Hamburg Rd spring drinking water, the Small Dirt Area parking, and the Streams meet attraction are near the trailhead. The Test testing waypoints can be seen along the trail.