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San Juan Range · Colorado 13er · No. 432 of the 13ers

South Ridge from Mary Alice Creek

UN 13,207, 13,207'

DifficultyClass 2
Round trip5 mi
Elevation gain2,545'
TrailheadMary Alice Creek
Trailhead elevation10,655'

Conditions on the summit

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Afternoon storm risk is the line that matters. Everything else is comfort. In summer, plan to be off the ridge before the build-up starts, not as it starts. Forecast for the summit point, adjusted for its elevation · data from Open-Meteo.

Colorado 13er · South Ridge from Mary Alice Creek

Overview

UN 13,207 (once listed as UN 13,201) rises west of the North Fork of Henson Creek, with great views of Wetterhorn Peak and Coxcomb. It's often climbed with UN 13,313.

You follow the Uncompahgre Trail (Trail 226) up Mary Alice Creek, cut west across the creek to the south ridge, and walk the ridge on tundra and chip rock, skirting one cliffy section. It is Class 2. An ice axe can help early in the summer when snow lingers.

The round trip is about 5 miles with 2,545 feet of gain. Most people reach the top in a little over two hours.

Plan of the day

Start by

By 7 a.m.

Turnaround

Be on the ridge by 10:30 a.m.

Crux

The cliffy section on the ridge near 12,800 feet.

Route-finding

Moderate. Avalanches have damaged the trail, so you may need to improvise to reach the upper basin.

Water

Mary Alice Creek. Sheep graze here, so filter it.

Getting to the trailhead

Trailhead

Mary Alice Creek

Find it on a map

From Gunnison or Montrose, take US 50 to the Highway 149 junction at the east end of Blue Mesa Reservoir and follow 149 south about 45 miles to Lake City. In town, go west on 2nd Street (3rd Street also works and passes a park with restrooms), then turn left on Bluff Street onto County Road 20, the Henson Creek road and part of the Alpine Loop.

County Road 20 is good gravel that cars can drive for 9.1 miles to Capitol City. You pass the Nellie Creek road at about 5.2 miles. At Capitol City take the right fork, Forest Road 870 (County Road 24), northwest up the North Fork of Henson Creek. About 11.1 miles from Lake City you reach the Matterhorn Creek trailhead turnoff, where many people park. The road is rougher here but higher-clearance SUVs can usually make it.

For Mary Alice Creek, keep going west about 0.75 mile on a road that keeps getting rougher. Stock 4WD is the better choice. Park near where a road turns northwest just after you cross Mary Alice Creek; that road is the start of the trail. This road runs right past the Matterhorn Creek area, which saw closures after the 2026 Elk Fire, so check current Forest Service closures before you go. There are primitive camp spots near the Matterhorn Creek crossing, but they fill on weekends.

Before you go

Check these the week of your climb.

Official forecast

The National Weather Service forecast for the summit area, hour by hour. Look for thunderstorm chances and wind above treeline.

NWS point forecast →

Directions to the trailhead

Mary Alice Creek. Road conditions near the trailhead change after storms. Check your clearance and have a backup plan for a lower lot.

Get directions →

Roads and highways

Closures, construction and winter conditions on the highways that get you there.

COtrip road conditions →

Closures and fire rules

Trail closures, fire bans and other alerts from the Forest Service in Colorado. For the latest on your trailhead, call the local ranger district.

Forest Service alerts →

Snow on the route?

From fall through early summer, any snow slope can slide. Check the avalanche forecast before you go.

Avalanche forecast →

Cell signal

Most trailheads and many summits have little or no signal. Check coverage near the trailhead and carry a satellite messenger or beacon if you can.

FCC coverage map →

Less traffic, less margin

This describes the route on a dry summer day. Most 13ers see few people, so there may be no one along behind you. Check recent conditions the week you go, carry a map, tell someone your plan, and turn around when the day tells you to.