Tanana River Challenge

The Tanana River Challenge is an exciting endurance event taking place in Fairbanks, Alaska, featuring a variety of activities including running, skiing, skijoring, and biking. Participants can choose between two distances: 25 miles and 45 miles, with the course winding around the scenic Tanana River and Rosie Creek forest. This event is a modern adaptation of the former Equinox Ultra-Ski 100k Challenge, now offering more modes of travel and multiple aid stations supported by dedicated volunteers.

Registration opens on January 1, 2025, with various pricing tiers available until race day. Visit the organization's website for the most recent information.