Colony Mill Road is a 21.28-mile out-and-back foot trail in Sequoia National Park, California. It climbs 3,441 ft to a high point of 5,725 ft. Difficulty: very strenuous, from the NPS hiking-rating formula.
Open Colony Mill Road on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Sequoia. Sequoia has permits or reservations for some areas: see the Sequoia page for what's needed.