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Underdown Trail Races

Merrill, United States • 16 Aug 2025

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.

United States Wisconsin Merrill

Race information

Website
60 km
60k
26 mi
Marathon
13 mi
Half Marathon
Visit the organization's website for the most recent information.
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