Located about 50 miles west of Chicago, Knock Knolls Park offers multiple loop trails along both singletrack and doubletrack trail great for mountain biking. The trails are mostly level with little elevation change making it a great place for riders of all skill levels. The trails are also used by hikers so watch out for others along the trail. The trails also can connect to the DuPage River Trail which is a popular paved multi-use trail that can provides miles and miles of extended hiking and biking.