Susitna 100 & Little Su 50K Wasilla, AK   Feb 15–16, 2025

Come enjoy the challenge of winter racing in Alaska on marked trails with spectacular views and varied conditions. The course is 100 mile loop on frozen rivers, swamps and tight twisty trails through the woods. It’s not uncommon to see moose, fox, dogsled teams, the aurora borealis, and majestic mountains on your journey between checkpoints with fun and friendly hosts.

The Susitna 100 and the Little Su 50K are wilderness races and as such are subject to Mother Nature’s whims. Each year presents a unique set of race conditions that is determined as much by the weather two weeks before the race as the preceding four months. The Race Committee makes an extraordinary effort to provide a trail that accommodates all the human-powered sports for which there are divisions. However, these races are as much about tenacity and patience as they are about strength and speed. Bear in mind you are racing across a series of lakes and swamps that nature did not design for skiing or snowshoeing, much less bicycling and running.