South Boundary Trail: Harebell-Fox Creek Trail is a 20.84-mile out-and-back foot trail in Yellowstone National Park, Wyoming. It climbs 3,612 ft to a high point of 10,001 ft. Difficulty: very strenuous, from the NPS hiking-rating formula.
Open South Boundary Trail: Harebell-Fox Creek Trail on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Yellowstone. Yellowstone has permits or reservations for some areas: see the Yellowstone page for what's needed.