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International School of Mountaineering
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International School of Mountaineering

Mountaineering expertise and passion since 1965

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Why Choose ISM?

Our pedigree speaks for itself

Founded in 1965, ISM is a prestigious English speaking climbing and mountaineering school based in Leysin Switzerland. We are by far the longest established provider of Alpine mountaineering courses to English speaking clients and attract clients from all over the world.

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Icefall Climbing 4
Off Piste Skiing 3

Sharing Our Knowledge

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Dave on sighting

On-sighting - Tips and Techniques

Verb - To climb a route that you’ve not climbed before, leading it from bottom to top without resting or…

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Kalymnos 2011 063 PS

Red-Pointing - Tips and techniques

Verb - To climb a route from bottom to top cleanly without any artificial rests such as sitting on the…

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The nuts

New Routes in the Canadian Rockies

Every day’s a road trip, as we thread our way through the beautiful mountains of the Canadian Rockies in search…

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Calum e5 Langdale 2

Climbing Motivation

Some thoughts on motivation and raising your climbing standard.

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Which Boots do I need?

Boot and footwear choice represents perhaps the single most important decision of all when considering your mountaineering equipment.

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Kyrgyzstan 8597

Some thoughts on rope choice linked into decision making

So, as a BMG IFMGA Mountain Guide and climber what ropes do I use?

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James Brown Original Route 2

Traditional Climbing on a Single Rope

So, traditional climbing on a single rope - old school or maybe just a modern take on things?

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Kevin Borrowdale

Why We Love British Trad Climbing!

Why we love British trad climbing!

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Kyrgyzstan 2019 5711

The Art of Making Traditional Kyrgyz Bread!

Reflecting on a special day in the Pamir Mountains, Kyrgyzstan 2019

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Testimonials For ISM

The course content was brilliant. No knocking whatsoever. We had Jacky for the duration, and his experience shines through and his leadership. He taught me a lot of things, not just the black and white of things but actually quick methods to overcome tricky situations!

Andy Challenor
Summits & Skills 4000m (Instructional Course)

Thanks for a fantastic week. It was really one of the best things I have ever done. I learned a lot during the week, not only about climbing technique, but also about attitude.

Lachlan MacGregor
Bernese Oberland 4000ers

Fantastic trip, both Steve and Sandy were amazing! Wholeheartedly loved the trip, already looking at doing another one!

Edward (2017)
Summits & Skills 4000m (Instructional Course)

Our Partners

UIAGM / IFMGA Guide Award Equipment Partner Retail Partner Retail Partner