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Big Blue Wilderness Loop

Uncompahgre National Forest, Colorado · 3 min read

Distance
14.2 mi
Elevation Gain
3,600 ft
Difficulty
strenuous
Route Type
Loop
Best Season
July through September
Est. Time
8-10 hours
Dog Friendly
Yes
Kid Friendly
No
Difficulty Score
10 / 10

Trailhead Amenities

Restroom
None
Parking
Free
Cell Service
No Signal
Water
Nearby
Camping
Dispersed
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Conditions, regulations, and fees change frequently. Verify with the local ranger district before your trip. Full disclaimer

At a Glance

  • The most remote wilderness loop in Uncompahgre National Forest
  • Two alpine lakes above 12,000 feet on the circuit
  • Elk herds frequently visible in the upper meadows
  • Loop format avoids backtracking through the same terrain
  • Rarely sees more than a dozen parties per week even in peak season
lakeviewsalpine meadowwildlifesummit

Overview

The Big Blue Wilderness Loop is the signature long route in the Uncompahgre National Forest, combining creek canyon hiking, alpine lake basins, and a high saddle crossing into a 14.2-mile circuit. The Big Blue Wilderness sees a fraction of the traffic of the neighboring Weminuche Wilderness, and the loop format means you cover new terrain throughout.

This route is appropriate for experienced hikers or backpackers. The saddle crossing at 13,100 feet is off-trail and requires navigation. As a backpacking trip, the two alpine lakes provide ideal campsites for a 2-day outing.

The Route

Miles 0 to 4: Big Blue Creek canyon. The trail follows Big Blue Creek through forested canyon with several crossings. Elk are frequently seen in the valley meadows in morning and evening.

Miles 4 to 7: Lower lake basin. The trail climbs steeply to the first alpine lake at 12,200 feet. The lake occupies a small cirque ringed by talus. Good camping on the eastern shore.

Miles 7 to 8: Saddle crossing. Off-trail navigation to the 13,100-foot saddle. The line is visible on clear days but requires care in fog or poor visibility.

Miles 8 to 14.2: Return via east fork. The descent follows the east fork drainage back to the trailhead through open tundra and then forest, passing the second lake at mile 9.

When to Visit

July through September. The saddle may hold snow into late June in heavy years, making navigation more difficult. September offers the best weather stability and fall colors in the lower canyon.

Practical Details

High-clearance vehicle required for the access road. Carry a map and compass or GPS for the saddle crossing. Water is available throughout from creek sources. See the dispersed camping guide for wilderness camping rules. For related routes, see Wetterhorn Peak Trail and the forest guide.

Leave No Trace

This trail receives enough use that following Leave No Trace principles is important for preserving the experience for future visitors. Stay on the marked trail to prevent erosion. Pack out all waste. Avoid camping within 200 feet of water sources or the trail. Use existing fire rings only where campfires are permitted, and check current fire restrictions at checking conditions before you go before any visit. The trail and surrounding terrain remain in good condition because previous visitors have respected these norms.

Safety Considerations

The strenuous rating reflects the trail's general character under typical conditions. Weather, seasonal snow, and trail conditions can change the experience significantly. Carry the 10 Essentials on any full-day outing. Inform someone of your plans and expected return time before heading out, particularly on longer or more remote trails. Cell service varies throughout Uncompahgre National Forest and may be unreliable in canyon bottoms or remote terrain.

Trailhead Parking

Big Blue Trailhead on Big Blue Creek Road (FR-868). High-clearance vehicle required. Primitive camping available at trailhead.

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Frequently Asked Questions

How long is the Big Blue Wilderness Loop?
The full loop is 14.2 miles with 3,600 feet of gain. It is a long day for strong hikers (8 to 10 hours) or a comfortable backpacking trip of 2 days. The route passes two alpine lakes with camping opportunities.
Is the Big Blue Wilderness Loop well-marked?
The lower trails are marked, but the loop crosses an unmarked saddle at 13,100 feet that requires map and compass or GPS navigation. This is not a route for hikers unfamiliar with off-trail navigation.
Do I need a permit for the Big Blue Wilderness?
No permit is required for day hiking or camping in the Big Blue Wilderness (as of 2026). Campfires are restricted above treeline. Use a camp stove for cooking in the alpine sections.
What is the Big Blue Wilderness?
The Big Blue Wilderness is a 98,000-acre designated wilderness area within Uncompahgre National Forest in the San Juan Mountains of Colorado. It protects the upper drainage of Big Blue Creek and several tributary streams. No motorized vehicles or mechanized equipment are permitted.