Arrowhead 135

The Arrowhead 135 is a challenging ultra-marathon held in the frigid winter of Northern Minnesota, recognized as one of the toughest endurance races globally. Covering 135 miles along the Arrowhead State Snowmobile Trail from International Falls to Tower, participants can choose to compete on foot, skis, or bicycles. With an average finish rate around 50%, and even lower for first-time racers, the event attracts elite winter athletes. The race is organized by volunteers and aims to promote human-powered endurance sports while supporting local charities. Entry fees are modest, with surplus funds donated to various causes. Visit the organization's website for the most recent information.