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Hiking & Walking: Colorado > Medicine Bow and Routt National Forests > Yampa Ranger District

Quick Facts

Lost Lakes Trail (Yampa Ranger District)

Beginning Elevation: 10,420 Feet (3248.1 Meters) at Round Lake
Difficulty: Moderate
Elevation Gain: 1,735 Feet (540.8 Meters)
Ending Elevation: 9,285 Feet (2894.3 Meters) at the Williams Fork
High Point: 10,720 Feet (3341.6 Meters)
Length, One-way: 5.4 Miles (9.0 Kilometers) from Round Lake to Williams Fork
Other Maps: Routt National Forest Map
TI Topo Maps: #122, Flat Tops NE, Trappers Lake
Trail Number: 1116
Usage: Heavy
USGS Maps: Devils Causeway

Satellite and Topo Map

General Description

Lost Lakes Trail is located in the Flat Tops Wilderness, west of Yampa. Access to Lost Lakes Trail requires the hiker to use the East Fork Trail #1119. Lost Lakes Trail begins at Round Lake, 6.4 miles north of Stillwater Reservoir on trail #1119. From Round Lake, the trail heads west toward Lost Lake Peaks. The trail leads past Long Lake, East Lost Lake, and can access trail #1103 which leads past West Lost Lake. If Lost Lakes Trail is followed, it loops back around to the north, following the West Fork of the Williams Fork and link back into trail #1119 at the confluence of the East and West Forks of the Williams Fork. From this point the traveler may either return by using trail #1119, south to Stillwater Reservoir (8.2 miles), or proceed to Pyramid Guard Station (5.7 miles), located along Forest Road #16, The Flat Tops Scenic Byway.

This trail provides access to high mountain lake country with good fishing. but the lakes along this trail receive heavy use. Please remember others will follow. Leave you campsite in a natural condition.


As humans, we must minimize our impacts to help preserve this resource for present and future generations.

Directions from Yampa: Travel S/SW on County Road 7 for approximately 7 miles to FDR 900. Follow FDR 900 approximately 8 1/2 more miles to the trailhead at Stillwater Reservoir. Follow the East Fork Trail #1119, 6 1/2 miles north, past Devil's Causeway, to Round Lake. NOTE: both the East Fork Trail and Lost Lakes Trail are located in the Flat Tops Wilderness so can be traveled only by foot or horseback.

Seasonal Information:
Normally Accessible: Summer through Fall (NOTE: Seasons vary depending on weather and snow depth.) .

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Recreation Opportunities
Activity Remarks On Site
ICON Backpacking Lost Lakes Trail
ICON Fishing area lakes
ICON Hiking & Walking Lost Lakes Trail
ICON Horseback Riding Lost Lakes Trail

Related Activities
East Fork Trail - The East Fork Trail is located in the Flat Tops, west of Yampa. It leads from Stillwater Reservoir to Forest Highway 16 near Pyramid. This trail intersects several other trails along its route.

West Lost Lakes Trail - The West Lost Lakes Trail is located in the Flat Tops west of Yampa. It leads from the Lost Lakes Trail, west into the White River National Forest.

More Information

Visitor Information:

Yampa Ranger District, 300 Roselawn Ave., P.O. Box 7 , Yampa, CO, 80483, Phone: 970-638-4516, Fax: 970-638-4635


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