Mount Castor (4,226 m)

Mount Castor (4,226 m)

CATEGORY

Mountaineering

DIFFICULTY

Easy +

ELEVATION GAIN

1,499 m

DURATION

2 days

SEASON

Summer

LOCATION

Mount Rosa

Overview

Castor dominates the Gressoney and Ayas valleys and is one of the most beloved climbs for Monte Rosa guides. Starting from the Quintino Sella refuge (3585 m), you reach the 4226 m summit by traversing its spectacular final ridges. It is the perfect climb for those who have already had a first introduction to mountaineering or have reached Capanna Margherita, and wish to experience a majestic 4000-metre peak with moderate technical difficulty and reasonable walking times. 

Period: From June to September 

Programme

FIRST DAY:

We meet at the Staffal lift ticket office at 14:30 for a quick gear check. From there, we take the cable car up to Colle della Bettaforca (2700 m), where we begin our scenic walk towards the Quintino Sella Refuge (3585 m), reaching it in about 3.5 hours. Dinner and overnight stay at the refuge. 

SECOND DAY:

At dawn, we set off for the ascent of Castor. In about 3.5 hours, we reach the summit, crossing glacier sections and a beautiful, sweeping final ridge. After a brief pause at the top to take in the views, we descend to the Quintino Sella Refuge and continue back to Colle della Bettaforca. We expect to arrive back in Staffal in the afternoon, around 15:30.

Difficulty: F+ – glacier trek with an exposed final ridge 
Ascent duration from the Quintino Sella Refuge: approximately 3 hours 30 mins 
Ascent elevation gain from the Quintino Sella Refuge: approximately 640 m 

Maximum number of participants: 3 or 4 per guide; the maximum number may vary depending on conditions.

Castor can be climbed with a maximum of 3 climbers; groups of 4 are welcome if the team is highly experienced and climbing conditions are ideal. 

1 Participant

€750

Per person

2 Hikers

€380

Per person

3 Participants

€280

Per person

4 Hikers

€220

Per person

The price includes: 

  • Guiding by a certified UIAGM mountain guide.

  • Harness and crampons. 

The price does NOT include: 

  • Lift passes.

  • Half-board accommodation in the mountain hut for clients and the guide (to be covered by the group). 

The most common questions

The most common questions

The most common questions

What to know before you set off

Mountaineering is by its very nature an adventurous activity. The Monte Rosa guides, all of whom are UIAGM certified, are dedicated to doing everything possible to minimise any hazards, but a element of risk is always present and should be embraced as part of the adventure before signing up for our activities.

The Monte Rosa Guides will always do their utmost to help you achieve your personal goals and ensure you have the best possible experience in nature. However, you must agree to trust their professional judgement whilst in the mountains and respect any decision they make, including turning back, should it be deemed necessary. Being well-prepared and maintaining a good level of physical fitness is essential to ensure a safe and enjoyable journey on all our excursions. If, due to fitness levels or any other reason, your guide feels you are not quite ready for your chosen activity, they will happily suggest alternative adventures beautifully suited to your current level of preparation.

Mountaineering is by its very nature an adventurous activity. The Monte Rosa guides, all of whom are UIAGM certified, are dedicated to doing everything possible to minimise any hazards, but a element of risk is always present and should be embraced as part of the adventure before signing up for our activities.

The Monte Rosa Guides will always do their utmost to help you achieve your personal goals and ensure you have the best possible experience in nature. However, you must agree to trust their professional judgement whilst in the mountains and respect any decision they make, including turning back, should it be deemed necessary. Being well-prepared and maintaining a good level of physical fitness is essential to ensure a safe and enjoyable journey on all our excursions. If, due to fitness levels or any other reason, your guide feels you are not quite ready for your chosen activity, they will happily suggest alternative adventures beautifully suited to your current level of preparation.

What to pack

  • 5 layers for your upper body (a thermal base layer plus a spare, a light fleece, a heavier fleece, a down jacket, and a windproof shell) 

  • 2 pairs of gloves (one lightweight pair and one warm ski pair) 

  • Windproof mountaineering trousers 

  • Thermal leggings 

  • Gaiters 

  • WATERPROOF hiking boots, with a stiff sole and good ankle support 

  • Two pairs of ski socks 

  • A warm hat that covers your ears 

  • Sunglasses with high-level UV protection (category 3 or 4) 

  • Sunscreen and lip balm 

  • Ice axe (if you are comfortable using one) 

  • Crampons and harness 

  • Headlamp 

  • Sleeping bag liner 

  • 1-litre water bottle or thermos 

  • Telescopic trekking poles with snow baskets 

  • Helmet (optional) 

  • 5 layers for your upper body (a thermal base layer plus a spare, a light fleece, a heavier fleece, a down jacket, and a windproof shell) 

  • 2 pairs of gloves (one lightweight pair and one warm ski pair) 

  • Windproof mountaineering trousers 

  • Thermal leggings 

  • Gaiters 

  • WATERPROOF hiking boots, with a stiff sole and good ankle support 

  • Two pairs of ski socks 

  • A warm hat that covers your ears 

  • Sunglasses with high-level UV protection (category 3 or 4) 

  • Sunscreen and lip balm 

  • Ice axe (if you are comfortable using one) 

  • Crampons and harness 

  • Headlamp 

  • Sleeping bag liner 

  • 1-litre water bottle or thermos 

  • Telescopic trekking poles with snow baskets 

  • Helmet (optional) 

insurance

Insurance for clients of Aosta Valley mountain guides

GET IN TOUCH

Get in touch to plan your adventure

Tache (Church square and Town Hall), Gressoney-La-Trinité

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GET IN TOUCH

Get in touch to plan your adventure

Tache (Church square and Town Hall), Gressoney-La-Trinité

I have read and accept the privacy policy

GET IN TOUCH

Get in touch to plan your adventure

Tache (Church square and Town Hall), Gressoney-La-Trinité

I have read and accept the privacy policy

Guide office

Tache (Church square and Town Hall), Gressoney-La-Trinité

Community

Copyright © 2026 All rights reserved

Guide office

Tache (Church square and Town Hall), Gressoney-La-Trinité

Community

Copyright © 2026 All rights reserved

Guide office

Tache (Church square and Town Hall), Gressoney-La-Trinité

Community

Copyright © 2026 All rights reserved