Frozen 4 Hour & 5K - Duluth Winter Trail Series

Frozen 4 Hour & 5K is a Duluth, Minnesota winter trail event within the Duluth Winter Trailrunning Series. The program offers a 4-hour timed race and a 5K on snow-packed, multi-use trails in Lester Park, with the start/finish at the Lester-Amity Chalet. Runners experience Duluth’s winter topography and scenic views on packed fat-bike trails that are popular for winter running.

The series emphasizes fun and challenge, with occasional snowshoe and no-shoe divisions across races. Notable features include a discount for registering for all four races and a special Winter Trail Series Survivor award for completing the series. Visit the organization's website for the most recent information.