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International School of Mountaineering
Summer Alpine 2

Instructional Courses

 Walking along a ridge

Guided Courses

 Summer Alpine 1

Private Guiding & Custom Weeks

Summer Alpine Mountaineering

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Intro Summer Mountaineering Alps 1

Summits & Skills 4000m (Instructional Course)

Level 1: Instructional Courses

May 2026 - Sep 2027
4:1 Ratio
£1,945
Level 2 Summer Mountaineering Alps 1

Classic AlpinISM (Instructional Course)

Level 2: Instructional Courses

Jun 2026 - Sep 2027
3:1 Ratio
£1,995
Monte Rosa Mountaineering 4000m Peaks Traverse 2

Monte Rosa 4000ers

Level 2: Guided Courses

Jun 2026 - Sep 2027
3:1 Ratio
£2,045
Private Guiding 1

Private Guiding 2027

Private Guiding & Custom Weeks

Call
Student Alpine Mountaineering Alps 1

Student Alpine Week (Instructional Course)

Level 1: Instructional Courses

Jul 2026 - Aug 2027
6:1 Ratio
£1395
Alpine Rock Climbing Alps 1

Classic Alpine Rock Climbs

Level 3: Guided Courses

Jul 2026 - Sep 2027
2:1 Ratio
£2195
Technical Alpine Climbing Alps 1

Technical Alpine Ascents - Just Go Climbing!

Level 3: Guided Courses

Jun 2026 - Aug 2027
2:1 Ratio
£2395
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Matterhorn Ascent - A Classic Alpine Dream!

Level 3: Private Guiding & Custom Weeks

1:1 Ratio
Call
Custom Courses 1

Custom Courses 2027

Private Guiding & Custom Weeks

Call
Alpine rock climbing Matterhorn Maxc

Matterhorn Climber

Level 2: Guided Courses

Jul - Aug 2027
2:1 Ratio
£2195
Crag to A Lpine 6

From Crag to Alpine - Chamonix Rock Week

Level 2: Instructional Courses

Jun - Sep 2027
3:1 Ratio
£1995

Not sure which course to pick?

Are you wondering which course is right for you? Don't fret, we are on hand to help you choose.

Have something else in mind?

Do you know what you want but don't see it in our usual courses? Call us and we'll see where we can help.

Summer Alpine Mountaineering

Our Courses allow you to progress in a logical, and thorough way, ensuring you get the full benefit from our courses and are able to move on the our more advanced courses if you wish.

Summer Highlights

  • Instructional courses
  • Guided climbing
  • Custom weeks for groups
  • Private Guiding
  • Expert guiding and instruction from experienced ISM Guides
  • A prestigious English speaking climbing and mountaineering school based in Leysin Switerland since 1965

Testimonials For ISM

Our guides were all excellent, I can't speak highly enough of them. They were all good company and superb climbers, and patient with us all.Matterhorn Ascent

Donald Connolly
Matterhorn Ascent - A Classic Alpine Dream!

Fantastic trip, both ISM Guides were amazing! Wholeheartedly loved the trip, already looking at doing another one!Summits & Skills 4000m 2026

Edward
Summits & Skills 4000m (Instructional Course)

Learned loads, the course is very carefully planned. Guiding and Instruction was excellent. Our ISM Guide was fantastic throughout & made the course really good fun. A very professional guide with a great sense of humour. Highly recommended.Summits & Skills 4000m 2026

Leigh Ritchie
Summits & Skills 4000m (Instructional Course)

All Reviews

Team Spotlight

Carlo Cosi

Carlo Cosi

IFMGA Italian Mountain Guide

Carlo Cosi was born in Padua, northern Italy, and has been a Guide since he was 23. He is a National Climbing Instructor and has a degree in Physical Education.

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Knowledge Base

Is Your Avalanche Transceiver Working Properly?

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