Susitna 100

Susitna 100 takes place in Big Lake, Alaska, on February 14, 2027. The schedule here lists a single distance, a 50K (31 miles), offered in three disciplines on the same course: on foot, by mountain bike or on cross-country skis. Start times are not given.

A February 50K in Alaska has little in common with a road ultra, and the fact that the same route is raced on skis and on bikes tells you the surface will not be firm pavement. Train for time on your feet rather than pace, get long outings on soft or uneven ground so your ankles and hips are used to it, and plan your fueling around a day that will take longer than a 31-mile road effort would. Careful clothing choices and food you can actually eat while moving matter more than any speed session.