Mountain Adventure Seminars

Mountaineering and Guide Service in Bear Valley, California

Mountain Adventure Seminars (MAS) is a year-round mountaineering school and guide service based in Bear Valley, California specializing in rock climbing, mountaineering, avalanche education and backcountry skiing and snowboarding. MAS is owned and operated by Aaron & Kimi Johnson and is a reflection of their love for the outdoors and enthusiasm for playing, sharing and educating in “wild places”.  MAS has been operating since 1996 and is excited to be celebrating 15+ years of fun and service.

Courses We Offer

Ebbetts Pass Century

Ebbetts Pass Century (EPC) – Aug. 20, 2016 The 9th Annual Ebbetts Pass Century will be held in Bear Valley, California on August 20, 2016 with four routes offering a variety of road cycling terr

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Each year MAS delivers numerous privates for individuals and groups seeking training and challenges outside the scope of the regular MAS calendar.

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Rock Climbing

The MAS Outdoor Rock Climbing School offers a comprehensive curriculum facilitated by experienced and professional guides.

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MAS strives to develop people's skills in the mountains and appreciation for the alpine environment.

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Avalanche Education

MAS Avalanche Courses blend classroom and "on-snow" exercises to provide a thorough and "hands-on" understanding of avalanche hazards.

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Skiing & Snowboarding

MAS and Bear Valley Mountain offer an exciting and unique experience for advanced skiers and snowboarders.

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If you enjoy visiting wild places you'll be thrilled to know that snowshoeing can be a fun, energizing and beautiful way to experience the marvels of backcountry winters.

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Annual Bear Valley Events

Bear Valley is home to several popular Yearly Events. Major annual events are a huge part of Bear Valley, and are a big reason why visitors keep on coming back for more

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Upcoming Courses