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Mosquito Range · Colorado 13er

South Slopes

Peerless Mountain, 13,356'

DifficultyClass 1
Round trip6.5 mi
Elevation gain1,750'
TrailheadFourmile Creek (Horseshoe road)
Trailhead elevation11,600'

Conditions on the summit

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—Summit temp now
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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 Slopes

Overview

Peerless Mountain is the lower neighbor of Horseshoe Mountain above Fourmile Creek. This route follows a 4WD road to the saddle between the two peaks, then a short rocky trail north to Peerless's summit.

It is Class 1, almost all on road, with a short rocky trail at the end.

The round trip is about 6.5 miles with 1,750 feet of gain from the bottom of the 4WD road, usually 3 to 4 hours. Most people pair it with Horseshoe, which is just across the saddle.

Plan of the day

Start by

By 7 a.m.

Turnaround

Be at the saddle by 11 a.m.

Crux

Nothing hard.

Route-finding

Follow the road to its end at the saddle, then turn north.

Water

None. Carry it.

Getting to the trailhead

Trailhead

Fourmile Creek (Horseshoe road)

Find it on a map

From Fairplay, head south on US 285 for a little more than a mile, then turn right (west) on County Road 18. Follow it about 10 miles to the old Leavick site at about 11,250 feet.

About 0.75 mile past Leavick, near 11,600 feet, a 4WD road turns off to the left. Park at the bottom in a regular car, or drive about half a mile up to a small parking spot on a bend if you have high clearance.

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

Fourmile Creek (Horseshoe road). 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.