The Willow 20 Miler
Hudson, United States • 2 May 2026
Event overview
The Willow 10 & 20 Miler is a trail race at Willow River State Park near Hudson, Wisconsin. The event offers the following distances:
- 10 Miler: single loop on grass and gravel trails.
- 20 Miler: two loops of the same course.
Registration for the event closes on Wed, Apr 29 at 11:59 PM CT. The race director may delay, suspend, or cancel the event if weather or course conditions are unsafe.
Course and support
Each loop visits different areas of the park, including forests, grasslands, and panoramic viewpoints. The park includes Willow Falls, a cascade into a 200-foot-deep gorge. An aid station is located at about 6.75 miles into the loop, supplying water, BPN GO GELs, and individually wrapped snacks. 20-mile runners have an additional aid opportunity near the finish of the 10-mile loop to refill water, take a snack, and access items from drop bags.
Location
The event is based at Willow River State Park, 1034 County Highway A, Hudson, WI 54016. The park is roughly 30 to 40 minutes from the eastern Twin Cities area and is about five miles north of Hudson. Visit the organization's website for the most recent information.