Union Grove State Park offers a small trail system of multi-use trails that provide some fun easy-to-moderate riding for mountain bikers. The trails travel through mostly open prairie terrain with some small ups and downs. The trails are mostly dirt and stone but can be overgrown by tall vegetation in spots. There may also be occasional mud in lower segments of the trail. The multi-use trails are also open for horseback riding and hikers so watch out for other users on the trail.