The O'Fallon Illinois YMCA is a state-of-the-art fitness and wellness facility. The Y offers a wide range of amenities and programs to help individuals and families achieve their health and fitness goals. Enjoy a large gymnasium, indoor pool, fitness center, indoor track, group exercise studios, youth sports and more. With a welcoming atmosphere and diverse offerings, the O'Fallon Illinois YMCA is a hub for health, wellness, and community in the O'Fallon area.