About Our Shop

Yöstmark is Teton Valley’s oldest and premier mountaineering and backcountry shop in Teton Valley, ID. Our mission is to build lasting relationships with our customers and community by providing the best tools and information for a quality outdoor experience. We pride ourselves

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Avalanche Courses & Information

Avalanche Awareness Night, Backcountry 101, Avalanche Level 1 & 2

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Lessons & Tours

In addition to the best gear for the backcountry, Yostmark also offers professionally guided backcountry tours and skills instruction. Come visit the Yostmark Backcountry Tours website for information on lessons and tours.

Service & Repair

Hit a rock? Blow out an edge? Need a basic tune or new bindings mounted? Our experienced techs can do the job for you.


Winter rentals include everything from snowshoes to a full backcountry ski set up. Summer rentals include Stand Up Paddle boards (SUPs), PFDs, and bear proof containers.