From I 81, take Exit 150 to SR 220N past Eagle rock to SR 615 (left) for 5.5 miles to SR 621 (right) for 1 mile. Roaring Run entrance on left. From I 64, take Exit VA 696, right onto SR 696, right onto SR 616, then a sharp left onto SR 621.
You can also click on on the map to get Google directions to the trailhead.