The 4000 m of the Val d'Ayas: Breithorn - Castor & Pollux

The 4000 m of the Val d'Ayas: Breithorn - Castor & Pollux

The Mont-Rose massif and its many summits over 4000 m is the ideal place to practice alpinism in the best possible conditions: quick access to the high mountains thanks to the ski lifts, comfortable and many mountain refuges to organize itineraries in the heart of this alpine massif. Without a doubt, Mont-Rose and its cross-border ridges separating Switzerland from Italy will seduce you and leave you with unforgettable memories of your high-mountain adventure.
Massif du Mont-Rose
2 days
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Immersion in the heart of Mont-Rose massif

Immersion in the heart of Mont-Rose massif

The Monte Rosa massif is one of the largest massifs in the Alps, bordering Switzerland and Italy. In the protected valley of Valle d'Aosta, many known summits of more than 4000 meters of altitude are accessible like the Breithorn, (4164 m), and the two twin summits: the Pollux, (4092 m) and the Castor (4223 m).

We propose a two-day itinerary with a night at the Val d'Ayas mountain refuge, ideally situated at the base of these three summits, with a warm welcome and Italian food with tomato sauce!
From the top of these summits you will contemplate other giants of the Alps such as the highest point of the massif: the Pointe Dufour (4634m), the Lyskamm (4527m) or the Matterhorn (4478m)... enough to project yourself into future alpine dreams in the heart of the Valaisan Alps

An option without using the lifts is possible by passing the Champoluc valley, it is also possible to extend the trip over 3 days (on quotation) in order to enjoy completely this Italian sector of the Mont-Rose massif. Other mountain refuges such as the Mezzalama Refuge or Quintino Sella allow you to create and imagine very varied itineraries and loops.


Itinerary / program :

Day 1 : We take the lifts from Breuil - Cervinia at 7.30 am to go up to Plateau Rosa. From there we walk to the foot of the Pollux, passing under the Breithorn and Roccia Nera, climb the Pollux (4089 m) and then descend to the Val d'Ayas Guide Hut (3374 m) to spend the night. (D+ = 644m/ D- = 715m)

Day 2 : Early morning departure from the Val d'Ayas Guide Hut to climb Mont Castor and/or Mont Breithorn. Return to Plateau Rosa, then ski lifts to Breuil - Cervinia. Return to Chamonix in the late afternoon. (D+ = 841 m/D- = 344m for Castor)


More details in our technical sheet to download.


Other routes to discover in the Monterosa massif:

Les 4000 m du Mont-Rose ( Pyramide Vincent, Punta Parrot et Signalkuppe) au départ de Gressonney ( Italie)

Le Cervin 4478m au départ de Zermatt

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Good to know about the adventure
The 4000 m of the Val d'Ayas: Breithorn - Castor & Pollux

The price includes
Supervision by 1 U.I.A.G.M. mountain guide
Return lift ticket Plateau Rosa / Breuil - Cervinia
Booking of the mountain refuge
Overnight stay in a mountain refuge (dormitory with the possibility of bunk beds), dinner and breakfast included.
Picnic lunch D1+D2
Loan of safety pack with shovel, probe, DVA if necessary
Loan of harness and helmet if necessary (if you have your own equipment, bring it with you)
The price does not include
Transport to and from the start of the race
Mountain rescue, search and repatriation insurance (Mandatory)
Cancellation / interruption of stay / luggage insurance (Recommended)
Rental of technical mountaineering equipment
Mineral water, drinks, food and extras
Everything that is not mentioned in the "price includes
Required level
Be a good walker; be able to move at a speed of at least 300m/hour and achieve 1000m of ascent.
There is no obligation to be a mountaineer but at least to be familiar with the mid-range mountains and the snow. You will be equipped with crampons.
Meeting time and place
Meeting early in the morning on D1 at the Mont Blanc or Annecy car park for car pooling.
Your guide will confirm the exact time when you book. Other meeting point possible.
Return late afternoon on D2.
Favorable period
June to September, depending on weather conditions.
Dates to be communicated to us, according to availability at the time of booking.
The weather is a key factor, be flexible and ready to change the summit or dates to optimize your race.
In case of bad weather conditions announced before the departure, your guide will propose you to postpone your ascent in the summer, or the following summer, according to the availability of the huts.

As a mountain professional, the guide reserves the right to adapt, modify or shorten the itinerary according to the weather conditions and/or the level of one or several participants. In this case, no refund will be made.

Any day of supervision added to the initial program will be charged at 400€ / day (excluding accommodation, food and transport costs)

Activities guides The 4000 m of the Val d'Ayas: Breithorn - Castor & Pollux

Jérémy Janody
Rock climbing
Ski Touring
Via Ferrata
Ice Climbing
Team Bulding
Security training
Ski Freeride
Children and teens
Jérémy Janody

Mountain Guide

Rémi Riquet
Rock climbing
Ski Touring
Via Ferrata
Ice Climbing
Security training
Ski Freeride
Rémi Riquet

Mountain Guide

See all guides
Meeting place
Mont-Rose massif
For further information, please contact us

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