From Hessie Trailhead, cross the footbridge following Devils Thumb Trail #902 which climbs steeply for about a half-mile on an old road.
Do not take the Devils Thumb Bypass which turns right (north) in 0.8 miles just before the bridge. This trail does not pass the Lost Lake Trail junction. 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 half mile on a good trail.
Camping is allowed only at designated campsites. Click here for a map.
Click here for a trail description.
At a Glance
||Moose have recently charged several people in this area. Moose are especially aggressive when a dog is nearby. For your safety and for the safety of others, keep your dog on a leash at all times.
No permits are required at this time.
The Lost Lake Trail is located outside the Indian Peaks Wilderness. Wilderness regulations do not apply.
Camping at Lost Lake is restricted to eight designated campsites around the lake. Permits are not required, camping is first-come, first-served.
Fishing and hunting: permitted in accordance with regulations established by the Colorado Parks & Wildlife.
||Lakes and streams; treat water for drinking.
||Practice Leave No Trace principles
||U.S. Forest Service
Boulder Ranger District, 2140 Yarmouth Ave, Boulder, CO 80301, Phone 303-541-2500, Fax 303-541-2515; Contact Us
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.