Skip to Main Content
International School of Mountaineering
Briethorn traverse 1

International School of Mountaineering

Mountaineering expertise and passion since 1965

Start Exploring

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.

More About Us
Icefall Climbing 4
Off Piste Skiing 3

Sharing Our Knowledge

Visit Our Knowledge Base
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…

Read More
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…

Read More
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…

Read More
Calum e5 Langdale 2

Climbing Motivation

Some thoughts on motivation and raising your climbing standard.

Read More
DSC04458 2

Which Boots do I need?

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

Read More
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?

Read More
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?

Read More
Kevin Borrowdale

Why We Love British Trad Climbing!

Why we love British trad climbing!

Read More
Kyrgyzstan 2019 5711

The Art of Making Traditional Kyrgyz Bread!

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

Read More

Testimonials For ISM

Neil, our guide for the week, was exceptional; a true professional, a huge inspiration and just great company. He shared so many useful tips with us and had great stories to share too. Looking forward to booking another course with ISM in 2022!”

William Summits and Skills 4000m 2021

Please pass on my very, very sincere thanks to Thomas, Daniel & Christian. They are truly quality people! Patient, understanding, professional, and wonderful ambassadors for your company. I have experienced many guides over my 50 years in climbing and they rank right up there with the very best.

David Hughes
Mont Blanc Ascent

Terry was a wonderful guide and made everything fun, laid-back and an overall good experience. I would be happy to ski or climb with him again. All the logistics in Leysin and in Italy went smoothly. A really nice time.

KL (2017)

Our Partners

UIAGM / IFMGA Guide Award Equipment Partner Retail Partner Retail Partner