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Recreation Region: Boulder Ranger District

Lost Lake Trail

From the Hessie Trailhead, cross the footbridge and take the Devils Thumb Trail (#902), which climbs steeply for about a 1/2 mile on an old road. Do not take the Devils Thumb Bypass, which turns right (north) in 0.9 miles, just before the bridge. Instead, cross the bridge and stay on the main Devils Thumb Trail. It is 1.1 miles from the trailhead to the Lost Lake Trail junction. Turn left (south) following signs for Lost Lake Trail #813. The lake is up another 1/2 mile on a good trail.

Specific Trail Information

Trail Number

#813

Trail Type

Standard/Terra Trail — A trail that has a surface consisting predominantly of the ground and that is designed and managed to accommodate use on that surface.

General Information

Elevation: 9,800 feet at Lost Lake

View a trail map here.

Lost Lake is located outside of the Indian Peaks Wilderness area. Therefore, wilderness regulations do not apply. Permits are not required for camping.

Camping at Lost Lake is restricted to eight designated campsites around the lake and is first come, first serve. 

Use a bear canister and keep it 200 feet from campsite.

Getting There

Trailhead/Starting Points

Hessie Trailhead

Parking

Hessie Trailhead is extremely busy during summer months. Parking is limited and strictly enforced. On the weekends and holidays, the free shuttle runs from the Nederland High School.

Directions

From Nederland, head south on Colorado Highway 119 for 0.6 miles. Turn west onto County Road 130, signed for Eldora. Follow the paved road through the valley to the Town of Eldora, where the pavement ends. Continue beyond the end of the pavement for 0.75 miles to the fork in the road. The left fork goes to Hessie Trailhead.

Recreation Opportunities

Last updated September 10, 2026