Arapaho and Roosevelt National Forests · Colorado

Arapaho Pass

3.1 mi of trail, end to end · native material surface · trail No. 904 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide · hiking, horse, bike · seasonal: hiking 06/01-10/31

Trailhead Fourth of July Trailhead Drive there

Fourth of July Trailhead the Forest Service's write-up

This trailhead is accessed by five miles of rough, two-wheel-drive road. It is exceedingly popular, and parking is limited, especially on summer weekends. In winter, motorized access is typically not possible. Fourth of July Trailhead provides access to Arapaho Pass , Diamond Lake , and Arapaho Glacier Trails inside the Indian Peaks Wilderness .

At this trailhead is a small campground owned and operated by the City of Boulder called Buckingham Campground . Private property also exists in this area. Do not trespass.

COTREX Map

Caribou and Crater Lake Designated Campsite Map

Restrictions Indian&nbsp;Peak Wilderness restrictions apply: <ul><li><strong>Motorized equipment and mechanized&nbsp;transportation are prohibited. </strong></li><li><strong>Pets must be on a hand-held leash at all times. </strong></li><li><strong>Campfires are prohibited year round.</strong></li><li><strong>Campsites must be at least 100 feet&nbsp;away from water and trail.</strong></li><li><strong>Group size is limited to 12 (people and livestock combined).</strong></li><li><strong>Processed weed-free feed is required for stock.</strong></li><li><strong>Practice <a href="http://lnt.org/why/7-principles/?gclid=EAIaIQobChMIhsvkoYej7AIVjYTICh2FQgqwEAAYASABEgK3nvD_BwE">Leave No Trace principles.</a></strong></li></ul>Fishing and hunting: permitted in accordance with regulations established by the Colorado Parks &amp; Wildlife.

Accessibility <p>Access to the Fourth of July Trailhead is via Fourth of July Road. This road is maintained by Boulder County. There is now a seasonal gate on this road. This gate closes at the beginning of the winter season depending on&nbsp;weather conditions and other factors.&nbsp;Boulder County typically plows this road and&nbsp;opens the gate&nbsp;before Memorial Day weekend.</p>

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.