Mill Creek Park has several trails and paths throughout the park. Grass paths along the tree lines are kept mowed for walkers and runners. There are also hiking trails in the woods. The Lakeview Trail is behind the "A" Section of the campground. It offers easy/moderate walking and beautiful views of the lake. Rattlesnake trail is located near the Nature Center Shelter and is shared with portions of the Equestrian Trails. It offers more rugged to moderate haking. Visitors to the park and trails may also notice a series of bird houses along thier way. The Bluebird Trail is maintained by members of the East Central Illinois Bluebird Society, spearheaded by Loren Hughes. The group has been essential in re establishing bluebird populations in Edgar and Clark Counties.