Monument Geyser Basin Trail is a 2.4-mile out-and-back foot trail in Yellowstone National Park, Wyoming. It climbs 640 ft to a high point of 7,986 ft. Difficulty: moderate, from the NPS hiking-rating formula.
Open Monument Geyser Basin 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.