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Mosquito · Snow route

South Gully

Mount Bross, 14,178'

Mount Bross
DifficultyClass 2 · easy snow
Round trip9.5 mi
Elevation gain3,250'
TrailheadKite Lake
Trailhead elevation11,000'

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.

This is a snow climb. It is only safe when the snow is firm and stable, usually early in the morning in late spring and early summer. You need an ice axe, crampons, a helmet and the skills to use them. Check avalanche conditions before you go.

Snow route · South Gully

Overview

The South Gully of Mount Bross is a snow route. It climbs a long, winding gully on the south side of the peak, below the saddle with Mount Cameron. The angle is gentle for most of the way, so it is a good first snow climb. Many people also ski or ride it down.

It is best done in winter or spring while the gully is full of snow. You cannot see the gully from Kite Lake, so it helps to know where it starts. Just below the top, near 14,000 feet, the route joins the standard Kite Lake loop trail.

The summit of Bross has been officially closed since 2007 because private landowners have not granted public access. Check the current access status before you go and respect it. Plan on 6 to 9 hours, depending on how high you can drive.

Plan of the day

Start by

Before sunrise. Firm snow in the early morning is safer and easier to climb. Soft afternoon snow is tiring and raises avalanche risk.

Turnaround

Be off the snow by late morning, before it gets soft and slushy. If you have not reached the bottom of the gully (near 12,800 feet) by about 8 a.m. on a warm day, turn around.

Crux

The upper gully near 13,800 feet, where it gets steeper and bends right. Snow often runs out somewhere between 13,700 and 14,000 feet.

Route-finding

Moderate. The gully is hidden from Kite Lake. Head north-northeast from the lake area toward Mount Cameron, then east into the gully. Visibility in a storm can make this hard.

Water

No reliable water in winter or spring. Carry 2 to 3 liters, or melt snow.

Getting to the trailhead

Trailhead

Kite Lake

Find it on a map

Take Colorado 9 into Alma. In the center of town, watch for a small Kite Lake road sign on the highway's west side. Turn there, pass through a few homes and follow the road about 6 miles to Kite Lake. In summer, a sturdy 2WD car with good clearance can usually reach close to the lot. There is a fee to park.

In winter and spring the road is often closed near the old Paris Mill. You then walk, snowshoe or skin up the road to Kite Lake. How far you walk depends on how much the road has melted out.

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

Kite Lake. 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 →

Conditions change the route

This describes the route in its usual season. Distances and elevations are close estimates for planning. Snow, ice, rockfall, a washed-out road or an afternoon storm can make it a very different climb. Check recent conditions the week you go and turn around when the day tells you to.