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Underdown Trail Races

Merrill, United States • 16 Aug 2025

The Underdown Trail Races, held in Merrill, Wisconsin, offer challenging trail running events including 60k, marathon, and half marathon distances. Set in the scenic Underdown Trail system, the course features backcountry singletrack trails shaped by ancient glaciers, with numerous hills and isolated lakes. A unique aspect of the race is the dozens of boardwalks runners cross, enhancing the wilderness experience.

The event emphasizes a physical and mental challenge on remote terrain with limited cell service, making it suitable for experienced trail runners. Participants enjoy well-marked courses, aid stations, commemorative mugs, awards, and a festive after-party with live music. 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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