The Southeast Indiana Mountain Bike Association (SIMBA) is a non-profit 501 (c)(3) organization dedicated to protecting and improving mountain biking within Versailles State Park, Versailles, Indiana. The organization is committed to being an advocate for all mountain bikers, building and maintaining trails, teaching proper trail use, and riding techniques, and working with local and state agencies in identifying more space for trails within the park. Currently, there are 23 miles of trails, and by late spring of 2023, another 6.5 miles will be added.