This is a state park, so state park fees apply -- daily sticker or annual sticker. The park lists 10.3 miles of trail for off-road biking (with separate trails for hiking, horseback, ATV/Dirtbikes, etc.).
Located just west of Hwy.75 on Hwy.142, 9 miles ESE of Burlington, 7 miles SW of Union Grove.
http://www.singletracks.com/item.php?c=1&i=5135