Bela G. Vadasz
Technical Director, in spirit
IFMGA Internationally Licensed
Mountain Guide
Mimi Vadasz
Adminstrative Director
AMGA Certified
Ski Mountaineering Guide
Member School
Director, Bela G. Vadasz
receives the AMGA
Lifetime Achievement Award
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ASI was established in 1979 by Bela G. Vadasz and Mimi Maki-Vadasz. We are America's original all-terrain backcountry ski mountaineering, avalanche education and rock climbing courses and instruction and alpine climbing program based Truckee and in the Sierra Nevada, visiting the greatest ranges of the world. With experiences among the highest mountains in over 15 different countries, ASI's instructors and AMGA and IFMGA certified guides are also among the best and most experienced outdoor educators in America. We are among the best in Tahoe.
Winter -  We specialize in AIARE Level 1, 2 & 3 Avalanche Courses, Backcountry Skiing, including telemark, alpine touring, as well as splitboarding and winter mountaineering in the immediate Truckee/Lake Tahoe area along with ice climbing on Donner Pass as well as the famous Lee Vining Canyon. Also check out our Backcountry Adventure Center at Sugar Bowl Ski Resort. We offer daily sidecountry and backcountry tours with ski gear included.
Spring -  Enjoy high route ski traverses and ski mountaineering to destinations including Mt. Shasta, the Sierra High Route, the European Haute Route and ski descents of the Tioga Pass area, the Palisades and much more.
Summer -  Offering Rock Climbing Instruction and Courses in Truckee, CA at Donner Pass & Donner Summit & Lake Tahoe and guided rock climbs at Lover's Leap, climbs of Mt. Shasta and many High Sierra peaks, including North Palisade, Bear Creek Spire, The East Face, East Buttress and the Mountaineer's Route on Mt. Whitney.
Fall -  We guide great Sierra ice climbs such as Mt. Dana, the Dana Couloir, the U-notch and the V-notch on North Palisade and Mt. Sill. We visit many of the great ranges of the world including skiing inChile and trekking Himalaya & Everest Base Camp .
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AIARE Avalanche Level 1
Feb 21-23, 2020 full
Feb 28- Mar 2, 2020 2 spots
March 6-8, 2020
March 13-15, 2020
March 20-22, 2020...
AIARE Avalanche Rescue Course
Feb 23, 2020 (Sun) new date
Feb 24, 2020 (Mon) new section
Feb 29, 2020 (Sat) new date
March 15, 2020...
AIARE Avalanche Level 2
Feb 22-24, 2020 full
Mar 14-16, 2020
Intro to Backcountry
Ski or Splitboard
Feb 22, 2020
Feb 29, 2020
Mar 7, 2020...
Tahoe Tours
Ski or Splitboard
Feb 23, 2020
March 1, 2020
March 8, 2020...
Sugar Bowl Backcountry
Ski or Spiltboard
Feb 17, 2020...
Private or Groups
Special Rates for your own group
With 3 or more people --Pick your own date! Same course price!!
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Client Testimonials
Weather Forecasts
Avalanche Forecast
Photos & Videos
ASI Philosophy
Topo Maps
Tech Tips
Guides
Winter Schedule
