The Southern Unit of the Kettle Moraine State Forest has more than 160 miles of trails, varying in difficulty, length and permitted uses. Steep climbs or descents are common. Parking lots are provided throughout the forest. All terrain vehicles (ATVs) are not allowed on Southern Unit trails at any time.
This trail system, on County Highway Z just south of State Highway 59, goes through a hardwood forest with mostly hilly terrain. Three color coded trails ranging from 2 to six miles. Parking, water, and vault toilets are available. The trails in this system are single-track mountain bike trails that are generally more difficult than the John Muir Trails. Trail map.
On County Highway H north of the Town of La Grange and US Highway 12 and south of the Town of Palmyra, this is the most popular trail system within hundreds of miles. The John Muir Bike Trails are single-track, mountain bike trails that are rough, natural surface trails. Five different loops ranging from 1.25 miles to 12 miles. Parking, water, and vault toilets are available. Trail map.