San Juan National Forest · Colorado

Cross Mountain

3.4 mi of trail, end to end · about 1,900 ft of climbing · 10,028 ft–11,937 ft · native material surface · trail No. 637 · trail class 2 · typical grade 12-20% · tread 18-24 inches wide · hiking, horse, bike · seasonal: hiking 06/01-10/31

11,241 ft 11,937 ft · 1.4 mi high 11,937 ft

Trailhead Cross Mountain Trailhead 10,025 ft Drive there

Cross Mountain Trailhead the Forest Service's write-up

The Cross Mountain Trailhead is the start of Cross Mountain Trail (637). The trail is 3.1 miles long. It begins at Forest Road 424 - Cross Mountain and ends at Lizard Head Trail (409). The trail is open for the following uses: Hiking, Horseback Riding.

This trailhead on fs.usda.gov

Hike this trail · Every trail in San Juan National Forest

Hike this trailAll 381 trails in San Juan National ForestFind 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.