This race is a scenic mix of challenging climbs and descents through Willow River State Park. Run along the banks of the Willow River, between beaver ponds, and past Willow Falls, taking on the Serpent's Tail to the finish line. Choose between 21.1K Half Marathon, 10.6K or 6.6K distances! Race as a team! The 3K Family Fun Walk is perfect for families. For kids 12 and under, the always-popular, free, 1K Kids' Obstacle Challenge is back! 

All participants registering before race day in the Half Marathon, 10.6K and 6.6K events receive a fabulous Willow River Trail Challenge tech shirt. There will be awards, swag drawings, and other fun activities.

Free admission to the park. There is an entry fee for the run. Register early and save. Information on the trail run is available online.