These trails climb and descend the 160' hill that is Winter Park, numerous times. There are four loops available here, the white loop (3 miles)stays in Winter Park, while the Green (4 miles), Yellow (4 miles), and Red (7 miles) loops enter into the DNR fish collection area. These trails are 100% singletrack and might not be appropriate for everyone. If you enjoy fairly technical, lung and leg burners, check'em out.
In the town of Kewaunee, head north on County "C". 1 mile north of Kewaunee in Footbridge take a left on County F, cross the Kewaunee River and immediately take a right on Ransom Moore Lane. Park at the chalet at Winter Park. Maps are available at the trailhead which is located by the tubing hill tow shack.
http://www.singletracks.com/item.php?c=1&i=1128