Both the 11K and 22K have a challenging mix of ski/hiking trail and single track mountain bike trail. The 22K loops through the Tollund property, a beautiful land acquisition of Dane County Parks. This 3K loop takes you all the way up to County Hwy F across from Brigham Park, the east mound.Aid stations are at about 4K intervals, but the terrain is challenging, so plan on carrying some water and fuel. Registration is limited to 350 runners. We expect to fill up-- enter early. There will be no day-of registration.Wisconsin State park vehicle admission sticker required may be purchased on entry. Proceeds benefit the Friends of Blue Mound State Park. The Friends support many projects in the park every year, from trail maintenance to building the new all season shelter and learning center at the trail head.