The Arrowhead 135 is a winter ultra for hikers, skiers, and bikers in Northern Minnesota with an average finish rate under 50%…


Date: January 31, 2022

Time: 7:00 am


Event Website

Organizer: Ken Krueger


The Arrowhead 135 is recognized in the book “The World’s Toughest Endurance Challenges” by Richard Hoad and Paul Moore as one of the 50 toughest races in the world. It is a human powered Ultra Marathon taking place in the coldest part of winter in the coldest city in the lower 48 states. Our average finish rate is less than 50%, the finish rate for new racers is much lower. 2019 finish rate was 35%.

135 miles Deep Winter across Northern Minnesota on rugged, scenic Arrowhead State Snowmobile Trail from Frostbite I-Falls to Tower, MN Fortune Bay Casino. Pick your mode of transport at start: bicycle, ski or foot. This is our 16th year of Arrowhead – we attract some of the best winter ultra-athletes in the world.

Event image by Cass Gilbert