Arapaho and Roosevelt National Forests · Colorado

Greyrock

3.2 mi of trail, end to end · native material surface · trail No. 946 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide · hiking

Begins at the forest's mile 0, 40.6954, -105.2848 - no trailhead mapped Drive to where the trail begins

Greyrock Trailhead (#946)/Greyrock Meadows (#947) the Forest Service's write-up

The trail gently rises for ¾ mile then divides. The left branch, Meadows Trail (#947), is the slightly less strenuous but longer, and rejoins the main trail about 2.6 miles later. The right main branch turns uphill for 1.7 miles where it meets the upper end of the Meadows Trail. From the upper junction an additional ¾ mile climb leads to the summit. Trailhead signs warn of Giardia in the water and poison ivy growing along the trails of Greyrock. Greyrock trailhead accommodates approximately 39 vehicles.

You can find more information on the Poudre Wilderness Volunteers website . Download trail summary here .

Restrictions Trail Regulations: Dogs must be on a hand held leash. No motorized or mechanized equipment. Horses and stock are prohibited. Camps and fires at least 200 feet from water and trail. Shooting is prohibited unless hunting.

This trailhead on fs.usda.gov

Every trail in Arapaho and Roosevelt National Forests

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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.