Arapaho and Roosevelt National Forests · Colorado

High Lonesome

18 mi of trail, end to end · native material surface · trail No. 7 · trail class 2 · typical grade 12-20% · tread 18-24 inches wide · hiking, horse, bike · seasonal: hiking 06/01-11/15

Trailheads Junco Lake Trailhead Drive there · Rollins Pass Trailhead Drive there

Devils Thumb Trailhead the Forest Service's write-up

The Devils Thumb Trailhead provides access to the Indian Peaks Wilderness via the Devils Thumb Trail and the High Lonesome Trail (#7).

There is parking for 15 vehicles and no facilities.

Note: The access road is closed to motor vehicles between Nov. 15 and June 15.

View a COTREX area map here .

Restrictions This trailhead provides access to the Indian Peaks Wilderness, therefore Wilderness regulations apply: <ul><li>Permits are required for overnight stays in the Indian Peaks Wilderness from June 1 to September 15.</li><li>Mechanized/motorized travel is prohibited.</li><li>Do not camp or build campfires within 100 feet of developed trails or bodies of water.</li><li>Group size is limited to 12 people and/or livestock.</li><li>Dogs must be on a leash at all times.</li><li>Follow the <a href="https://lnt.org/why/7-principles/?gclid=EAIaIQobChMIhsvkoYej7AIVjYTICh2FQgqwEAAYASABEgK3nvD_BwE">Leave No Trace principles</a>.</li></ul>Unless seasonal restrictions are in effect, campfires must be attended at all times and cold to the touch with the bare hand before being abandoned. Collection of dead and down wood is allowed; <strong>do not </strong>break branches from standing trees for firewood.

This trailhead on fs.usda.gov

Every trail in Arapaho and Roosevelt National Forests

Other trails from the same trailheads

All 460 trails in Arapaho and Roosevelt National ForestsFind a trailForest on fs.usda.gov

About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the forest's own site before you go.