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Mosquito Range · Colorado 13er

West Slopes from Weston Pass

Weston Peak, 13,586'

DifficultyClass 2
Round trip4.5 mi
Elevation gain2,200'
TrailheadWeston Pass
Trailhead elevation11,921'

Conditions on the summit

Loading Fetching the forecast for 13,586'…
—Summit temp now
—Sustained wind
—Gusting to
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Tomorrow

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Day three

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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 · West Slopes from Weston Pass

Overview

Weston Peak rises just north of Weston Pass, paired with Ptarmigan Peak on the same ridge. This route follows an old road from the pass, climbs the trailless west slopes to the ridge, then turns southeast to Weston's summit.

It is Class 2 on grass and rocks. There is no trail above 12,200 feet, but the terrain is open and easy to read.

Both peaks together are about 4.5 miles round trip with 2,200 feet of gain, usually 4 to 5 hours. Climb Weston first, then walk the ridge north to Ptarmigan.

Plan of the day

Start by

By 6:30 a.m.

Turnaround

Be on the ridge by 11 a.m.

Crux

Nothing technical.

Route-finding

Follow the road under the power lines until it fades, then head northeast to the ridge and turn right.

Water

None. Carry it.

Getting to the trailhead

Trailhead

Weston Pass

Find it on a map

From Fairplay, go roughly 4.5 miles south on US 285, then right onto County Road 5. Follow the signs for Weston Pass and drive about 15.5 miles to the top of the pass.

The road is maintained dirt and most cars can make it in dry weather.

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

Weston Pass. 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.