Overview
Mount Evans B is a rolling summit on the ridge south of Mosquito Pass, not to be confused with the 14er Mount Evans (now Mount Blue Sky). From the east side you walk the Mosquito Pass road to the pass, then follow the ridge south about 2 miles past radio facilities to the top.
It is Class 1 with no exposure: tundra with embedded rocks, some scree and chiprock. The road walk is long, rocky and dusty with 4WD traffic.
The round trip is about 10.4 miles with about 2,100 feet of gain, usually 5 to 7 hours. With a capable 4WD you can drive to the pass and make it an easy 4-mile walk. You can also reach it along the ridge from Pennsylvania Mountain.
Plan of the day
By 6 a.m.
Be at Mosquito Pass by 10:30 a.m.
Nothing hard. The long road walk is the main effort.
Road to the pass, then south along the ridge.
None. 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.
Low cars should park near the creek crossing. Beyond it the road to the pass is rough, rocky 4WD that is hard on stock SUVs, and this side often holds snow high up until early July.
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 →