Embrace the frosty challenge at the Frozen 4 Hour & 5K, a highlight of the Duluth Winter Trail Series, set for February 7, 2026, in scenic Duluth, Minnesota. This event offers a unique opportunity to test your endurance on the region's renowned snowpacked fat bike trails. The course, entirely on un-paved trails, winds through Lester Park, delivering breathtaking topography and stunning winter views as it navigates hills, river gorges, and tranquil forests. Both distances begin and end at the welcoming Lester-Amity Chalet, serving as your cozy base camp.

Runners can choose between a challenging 4-hour timed race, pushing to complete as many miles as possible on a 5K loop, or a spirited 5K trail race. Typical race day conditions in early February present exhilarating temperatures, with highs around 20F and lows near 2F, and only a 4% chance of precipitation, ensuring a true winter running experience. The Duluth Winter Trailrunning Series, established in 2019, has earned a reputation for its well-organized events and incredible atmosphere, with past participants praising the "beautiful course" and "phenomenal aid station volunteers". Locals often find these meticulously packed trails even more enjoyable to run in winter than during snow-free months.

Prepare for a genuinely invigorating race that promises both challenge and camaraderie. The Frozen 4 Hour & 5K is more than just a race; it's an adventure that celebrates the joy of winter trail running in one of Minnesota's most picturesque settings. Many runners describe it as a transformative experience, highlighting the amazing scenery and supportive community that define the Duluth Winter Trailrunning Series.