The Arrowhead Winter Ultra is a non-profit human powered ultramarathon on bike, foot or skis, covering 135 miles across the Arrowhead Region of Northern Minnesota from International Falls near the Canadian border to Tower, MN. The course follows a scenic, hilly, State multi-purpose trail under extreme winter conditions the first Monday of February. Completing the course is no small feat as winter temperatures in this area of Minnesota have been known to reach a record -60F degrees. No wonder the locals have dubbed their town the \\\"Icebox of the Nation\\\" and \\\"Frostbite Falls\\\".