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- Breithorn West Twin
13,579 ft · Wallis Alps, Italy/Switzerland
Breithorn West Twin
Breithorn West Twin is a 13,579 ft peak in the Wallis Alps, Italy/Switzerland. The standard route is the Breithorn Traverse: 6 mi, 2,000 ft of gain, AD-.
Breithorn West Twin at a glance
- Elevation13,579 ft4,138 m
- RouteBreithorn TraverseAD-
- Distance6 mi2,000 ft gain
- Time1–2 daysVery Hard effort
- SeasonJul–Sep
- RangeWallis AlpsItaly/Switzerland
Climbing the Breithorn Traverse
From Zermatt, Switzerland, ride the Klein Matterhorn cable car and cross onto the Breithorn Traverse (AD-), reaching this third summit along the twin-peak section east of the central top. There is no independent route of any consequence, just a point on the ridge reached in sequence. The crest is corniced throughout with sustained exposure and serious drops on the Italian side, so short-rope and gauge cornices carefully. Watch rockfall and hidden crevasses on the approach. It shares its outing with the other Breithorn traverse summits, so log the distance and gain once per trip; budget 1 to 2 days.
Gear and hazards
What to bring
Backpack (40–55 L)
Mountaineering Boots
Crampons
Ice Axe
Helmet
Harness
Rope
Carabiners
Belay Device- Prusik Cord
- Ice Screw
Base Layer
Midlayer
Insulated Jacket
Hardshell Jacket
Hardshell Pants
Warm Hat
Buff
Midweight Gloves
Glacier Glasses
Sunscreen
Headlamp
GPS Device
Satellite Communicator
Water
First-Aid Kit
Emergency Bivy
Heavyweight Gloves
Goggles
Offline Maps
Power Bank
Whistle
Approach Shoes- Slings
- Nut Tool
- Cams / Nuts
What to watch for
- Technical climbing
- Steep exposure
- Knife-edge ridge
- Rockfall
- Loose rock
- Cornices
- Snow near summit
- Ice near summit
- High altitude
- Extreme cold
- High winds
- Storms
- Low visibility
- Remote location
- Glacier travel
- Crevasses
- Altitude sickness
- Rapid weather shifts
Quests with Breithorn West Twin
Alpine 4,000ersPeaks near Breithorn West Twin
Frequently asked questions
How tall is Breithorn West Twin?
Breithorn West Twin is 13,579 feet (4,138 m) tall. It is in the Wallis Alps, Italy/Switzerland. It is also known as Breithorn (Eastern Summit), Eastern Summit, western twin.
How does Breithorn West Twin rank among the Alpine 4,000ers?
At 13,579 feet, Breithorn West Twin is the 43rd highest of the 82 Alpine 4,000ers. The highest is Mont Blanc.
How hard is it to climb Breithorn West Twin?
The Breithorn Traverse is graded AD- on the alpine scale, meaning fairly difficult: sustained snow, ice or rock that needs real climbing skills. Yak rates the overall effort very hard: 6 miles with 2,000 feet of elevation gain.
How many days does it take to climb Breithorn West Twin?
Most climbers plan 1–2 days for the Breithorn Traverse, with at least one night on the mountain.
Is Breithorn West Twin dangerous to climb?
It has real risks: avalanche and icefall danger, crevasses on the glacier and exposed sections where a fall would be serious. Teams rope up for glacier travel, and many first-timers climb with a guide.
Do you need crampons and an ice axe for Breithorn West Twin?
Plan on it. Crampons and an ice axe are on the gear list for the Breithorn Traverse for the snow and ice on the upper mountain, along with mountaineering boots that take crampons. Glacier travel also means a rope, harness and crevasse rescue skills. Conditions vary through the season, so check recent reports before you go.
Do you need to acclimatize to climb Breithorn West Twin?
Most people feel the altitude above 8,000 feet, and Breithorn West Twin reaches 13,579 feet. Spend a night or two at elevation first, drink plenty of water and turn back if a headache, nausea or dizziness gets worse.
When is the best time to climb Breithorn West Twin?
The usual climbing window is July to September. Outside it, expect snow, storms or closed access, and check the summit forecast before you go.
Climb Breithorn West Twin with Yak
Plan your route on a topo map, check the summit forecast, then log your climb and see what is left on your list