Courses We Offer
MAS / SWS strives to develop people's mountaineering skills and appreciation for the alpine environment. Now with new locations in California including Mt. Shasta and Mt. Whitney!
Rock Climbing 2018
The MAS/SWS Outdoor Rock Climbing School is one of California's most comprehensive programs with instructional and adventurous trips. Now with more venues than ever!
Avalanche Education 2018
MAS/ SWS Certified AAA Avalanche Courses Level 1 and Level 2. FREE - Avalanche awareness clinics at all Bay Area REI's Check it out!
Privates & Groups 2018
MAS / SWS offers private custom climbs, courses, and expeditions for individuals as well as custom groups climbs. Give us a call to discuss your ideas - 888.797.6867
Skiing & Snowboarding 2018
MAS and Bear Valley Mountain offer an exciting and unique experience for advanced skiers and snowboarders.
If you enjoy hiking and visiting wild places you'll be thrilled with snowshoeing and experiencing the marvels of winter.
Ebbetts Pass Century 2018
The 11th Annual Ebbetts Pass Century is happening in Summer 2018 - check back to for the 2018 date, with four routes to challenge a variety of cyclists.
Bear Valley Freeheel Race Series 2018
The Bear Valley Freeheel Race Series is three separate ski mountaineering events which tackle a different course for each race. 2018 Schedule out soon!