Alaska Winter WildernesS Races
Bike, travel on foot, or ski 100 miles or 50 kilometers through Alaska’s winter backcountry.
February 13-15, 2027
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2 races. 3 WAYS TO move.
1 UNFORGETTABLE CHALLENGE.
Every February, we take on the Susitna Valley by bike, foot, or ski in two human-powered races: the Susitna 100, a 48-hour test across 100 miles of remote winter terrain, and the Little Su 50K, a shorter adventure on the same trail systems.
ways to participate
SUsitna 100
100-MILE ORIGINAL ON FOOT, SKIS, OR BIKE
LITTLE SU 50K
SAME TRAIL SPIRIT, A SHORTER DISTANCE
VOLUNTEER
THE RACE DOESN'T HAPPEN WITHOUT USGet race DAY ready
Everything you need before you stand at the starting line at Happy Trails Kennel.
GUIDES AND RULES