Horseshoe Lake State Park is an Illinois state park in Madison County, Illinois, United States. It is approximately 2960acre and surrounds a large horseshoe shaped lake called Horseshoe Lake. Horseshoe Lake is the second largest natural lake in Illinois taking up approximately 2400acre of the 2960acre park. The park has connections to Madison County Transit's Schoolhouse Trail, which connects to over 85mi of bike trail in Madison County, and even a trail which goes all of the way to downtown St. Louis after crossing the Mississippi River on the Chain of Rocks Bridge. The park is located in southeastern Granite City, Illinois, just a 10mi drive northeast of downtown St. Louis.
