Just finished for 2010. Singletrack, singletrack, singletrack. Fun for all abilities. This used to be all doubletrack shared with hikers, now double track is hikers only and singletrack is for bikers. Classic north kettle wisconsin forested mountain biking. AFter living out west I really love this stuff, there you are either grunting up an uphill or riding the brakes downhill... loving me the rolling flats!
From Milwaukee. Take 45N to Kewaskum. East on 28. North on Kettle Moraine Scenic Drive, drive for about 2 miles, then east on valleyview/countyline rd, trail head about 500yards in on left.
http://www.singletracks.com/item.php?c=1&i=3807