Set at the base of Purgatory, this short track race series is for Nordic skiers, fat bikers, and snowshoers to battle it out in the dark, up and down punishing terrain and around quick turns while being cheered on by the visiting gapers sitting outside at Purgy’s. The Triathlon, an official Snowdown event, adds an interesting twist to an already twisted race. Sign up as an individual or put your name in a hat to be randomly assigned to a team of kindred spirits. Prizes for winners. Serious schwag for all. $10/event.