Brown Mountain and Rocky Mountain Run Loop

Brown Mountain and Rocky Mountain Run is a 9.7-mile loop from Brown Mountain Overlook. It follows Brown Mountain Trail down the ridge, crosses the Big Run valley on Big Run Portal, then climbs back toward the overlook on Rocky Mountain Run and a short piece of Brown Mountain Trail. Expect about 2,175 feet of climbing and allow six to seven hours for a hard, full-day walk. This mapped version leaves out optional extra exploration farther up Big Run.

The trail drops steeply from the overlook, then works up and along the ridge on rough tread and switchbacks. The upper stretch opens in places, with brief looks across the Blue Ridge through gaps in the trees. About 2.2 miles from the overlook, open quartzite ledges look over Big Run valley; they are a natural turnaround for hikers who want a shorter walk without committing to the whole loop. After the ledges, the circuit descends toward the valley on steep, tight switchbacks.

Big Run Portal follows an old roadbed along the valley and crosses the stream several times. These crossings are the route’s main decision point: water can rise to knee or even waist depth in spring or after heavy rain. If the water is high or moving strongly, turn back rather than trying to force a crossing. The low valley is a change from the ridge but does not make the route easy; crossings can be slow and the ground can be wet.

From Big Run Portal, Rocky Mountain Run climbs and descends gradually for nearly three miles, with roughly 1,000 feet of elevation change. One last steep pitch comes near the Brown Mountain Trail junction; the final stretch back to the overlook is about seven-tenths of a mile. The circuit gives you a real ridge-to-valley traverse rather than a short summit walk, so keep enough daylight for the climb out.

The park has used Brown Mountain Trail to interpret the effects of the 2016 Rocky Mount Fire, a lasting part of this landscape’s story. In September, goldenrods can line the steep sections of Brown Mountain. Beyond the Rocky Mountain Run junction, moister, richer soil supports a different mix of native wildflowers. The quartzite ledges are the route’s strongest view; a strip of pale rock in the foreground helps show the drop into the wooded valley.

Start at the small pull-off at Brown Mountain Overlook on Skyline Drive, near milepost 76.9; a Shenandoah entrance pass is required. No food, toilet or potable-water service was identified at the overlook or along the loop, so plan for a long day away from facilities. Dogs are allowed on this route on a physical leash no longer than six feet. Overnight camping in the backcountry requires a permit. If you want the ledge view without the valley circuit, Brown Mountain Trail to the quartzite ledges and back is about 4.4 miles round trip.