Overview
Mosquito Peak is the one ranked summit on the ridge just north of Mosquito Pass, between Kuss Peak and Treasurevault Mountain. The simplest way up climbs Kuss Peak's east ridge from the east side of the pass, then follows the ridge north.
It is Class 1 to 2 over thin tundra, small chiprock and rubble. From Kuss you drop about 300 feet to a saddle and climb about 520 feet to Mosquito.
Going out and back over Kuss, the round trip is about 6.2 miles with about 2,900 feet of gain, usually 5 to 6 hours. Distances beyond Kuss are our estimates.
Plan of the day
By 6 a.m.
Be on Kuss by 10 a.m.
Nothing hard. Weather on the open ridge is the main concern.
Follow the Kuss Peak route, then walk north along the ridge. A road drops to the west from the Kuss-Mosquito saddle; it does not go to the summit.
None above the creek. Carry it.
Getting to the trailhead
Mosquito Creek
From Highway 9, about a mile south of Alma, turn west on Mosquito Gulch Road (County Road 12). Drive about 6.8 miles to where the road bends left and crosses Mosquito Creek, then starts climbing toward Mosquito Pass.
Park in the area about 0.1 mile past the creek crossing. Any car can get this far in dry weather. Above here the road to the pass is rough, rocky 4WD.
Base towns and camping for this climb
Coming from out of state? See Lodging & Camping for how free camping works, what is closed this year and where to stay.
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
Mosquito 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 →