Lost Lake Trail is a 7.94-mile out-and-back foot trail in Yellowstone National Park, Wyoming. It climbs 300 ft to a high point of 6,895 ft. Difficulty: moderate, rated by the National Park Service.

Lost Lake Trail · rated “moderate hike”
Read the official NPS description
Open Lost Lake 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.