Underdown Trail Races
The Underdown Trail Races, held in Merrill, Wisconsin, offer a challenging and scenic trail running experience on August 16, 2025. The event features distances of 60k, marathon, and half marathon through the Underdown Trail system, known for its backcountry singletrack trails shaped by ancient glaciers. The course includes numerous hills—up to 75 in total—isolated lakes, and dozens of boardwalks, providing a rugged wilderness atmosphere.
Participants enjoy well-marked routes, stocked aid stations, and drop bag transport. Finishers receive a custom commemorative mug, and the event concludes with a lively after-party featuring live music, food, and beer. Proceeds support trail maintenance. Visit the organization's website for the most recent information.
Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
