On Kettle Moraine Drive, 2.5 miles north of State Highway 67, the Greenbush recreation area has two trail systems: 4 loops of challenging mountain bike trails totaling 9 miles, interwoven with 5 loops of hiking trails totaling 13.5 miles. Hikers and off-road mountain bikers share this multiple-use trail system in season. For safety reasons, these trails are use-specific: hiking is not allowed on the bike trails, and biking is not allowed on the hiking trails. In winter the hiking trails are machine-groomed for cross-country skiing. Pets and hiking are not allowed on ski trails. The 1.2-mile Brown loop at Greenbush is lighted for night skiing. The bike trails are excellent for winter hiking and snowshoeing. A heated picnic shelter, picnic tables, grill, drinking water and vault toilets are near the trail head. There is also access to the Ice Age Trail.
