Up River Loop Trail is a 1.62-mile loop foot trail in Yellowstone National Park, Wyoming. It climbs 38 ft to a high point of 6,691 ft. Difficulty: easy, from the NPS hiking-rating formula.
Open Up River Loop 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.