Wild Duluth Races Harder 'n Heck Half Marathon & Terribly Tough 10K

Wild Duluth Races Harder 'n Heck Half Marathon and Terribly Tough 10K on Sunday October 18, 2026. 10K starts at Munger Trailhead parking lot at 9:30 a.m. and ends at Spirit Mountain. Half Marathon starts at Chambers Grove Park at 10:30 a.m. and ends at Spirit Mountain. Both races are point to point with bus transportation to the start. Including the Wildman and Wildwoman competition for those "Wildmen" or "Wildwomen" that can complete races on both days! Join us for the best and most scenic trail races in Minnesota in October!