Uncompahgre National Forest covers approximately 981,000 acres of Colorado's San Juan Mountains, centered on the Ouray and Montrose corridor in the southwest corner of the state. The forest is one of three proclaimed units forming the combined Grand Mesa-Uncompahgre-Gunnison National Forest (GMUG), which together form one of the largest national forest complexes in the lower 48 states. The Uncompahgre section is defined by its two wilderness areas and by the dramatic concentration of 14,000-foot peaks in the San Juan Mountains, a volcanic range quite different in character from the granite-dominated ranges of the northern Rockies.
The San Juans are remnants of ancient volcanoes, and their rugged, crumbling peaks have a distinctly different texture than the polished granite of the Sierra Nevada or the smooth ridges of the Sawatch. The rock is volcanic, tilted, and often unstable, giving the landscape a raw and imposing character. Ouray, at 7,800 feet in a tight valley ringed by cliffs, is one of the most dramatically situated towns in Colorado.
Trails
Cimarron Ridge Trail traverses the dramatic ridge above the Cimarron River drainage with views into the Black Canyon of the Gunnison to the north, a 9-mile route through high-alpine terrain. The Matterhorn Trail at 7.4 miles approaches the Uncompahgre Peak area from Matterhorn Campground, gaining nearly 3,000 feet to the high country above timberline.
The Wetterhorn Peak Trail at 9.6 miles is one of the most demanding objectives in the forest, reaching a 14,015-foot summit with views across the San Juan Mountains. The Big Blue Wilderness Trail explores the remote Big Blue Creek drainage in the Uncompahgre Wilderness, a 12-mile route through high-alpine terrain accessible from the Owl Creek Pass corridor.
American Flats Trail crosses a high-elevation plateau in the American Flats area, offering views across the San Juan volcanic field. The Owl Creek Trail follows Owl Creek through forested terrain to the Owl Creek Pass area, a moderate 10-mile route with access to the Cimarron Ridge.
Wildlife
Elk are the primary large mammal in the Uncompahgre section, with the San Juan herds among the largest in Colorado. Mule deer are common at all elevations. Black bears inhabit the forested zones throughout the forest. Mountain lions are present and occasionally reported in the Ouray area; follow current Colorado Parks and Wildlife guidance. The Uncompahgre Wilderness and adjacent high terrain provide summer range for bighorn sheep, which are sometimes visible on rocky slopes above the Cimarron drainage. Raptors including golden eagles and peregrine falcons nest on the cliff faces of the Ouray area.
Getting There
From Montrose, take US-550 south approximately 23 miles to Ouray for the southern Uncompahgre section, or continue on US-550 to Ridgway and take CR-7 (Dallas Creek Road) west toward the Sneffels Wilderness. For the Uncompahgre Peak and Wetterhorn area, take US-50 east from Montrose to Cimarron Road (CR-858) south, approximately 35 miles to the trailhead area. From Gunnison, take US-50 west through the Curecanti National Recreation Area to Montrose, approximately 45 miles.
Seasons
Summer (July through September): The hiking window. The San Juans are at high elevation, and most high-country terrain is inaccessible until early July. Afternoon thunderstorms are a near-daily occurrence in July and August; the San Juans have among the highest lightning strike rates in Colorado. Plan to be off summits and exposed ridges by early afternoon.
Fall (October): Hunting season brings significant activity in September and October. Aspen color in the valleys below is spectacular in late September.
Winter: Deep snow closes most forest roads and high-country trails. Telluride and several ski areas are adjacent to or within the forest.
Spring: Roads reopen progressively from May. High-country trails hold snow through June. The Ouray area itself is accessible year-round.
Nearby
Ouray (population around 1,000) is a classic Colorado mountain town with hot springs, restaurants, lodging, and a compact historic downtown. The town draws visitors year-round: ice climbers in January, hikers and jeep tour visitors in summer. Ridgway, about 10 miles north on US-550, is a smaller community that has grown as an Ouray overflow destination. Montrose, 25 miles north, is the regional service hub with a hospital, airport, and full commercial services. The San Juan Skyway Scenic Byway circles the range and connects Ouray, Silverton, Durango, and Telluride. See checking conditions before you go and practice Leave No Trace principles before any backcountry trip.
Planning and Resources
America the Beautiful passes cover entrance fees at applicable sites throughout the GMUG. Veterans and permanently disabled individuals may qualify for federal discount passes. The Ouray and Gunnison Ranger Districts maintain current trail and road conditions reports. Developed campground reservations for Matterhorn, Silver Jack, and other sites book through Recreation.gov, often filling weeks in advance for peak summer dates. High-clearance vehicles are recommended for many access roads to Uncompahgre Peak and Sneffels Wilderness trailheads; verify road conditions before attempting long approaches. Afternoon lightning storms in July and August make early starts essential for any summit objective in this range. Review bear canister requirements for overnight trips in the wilderness areas, and apply dispersed camping guidelines for any camping outside developed sites.
