Fitness Formula - Oak Park is open to both Club members and non-members alike. If you live in the Western Suburbs and like to climb, the Oak Park Climbing wall is the place to be. We pack numerous, constantly evolving climbing routes and bouldering problems on our 32-foot wall, offering challenges to every climber. Approachable instructors will even help climbers design routes to match their progress and goals! By providing fun classes for adults and children, we have built a suburban climbing community for both the casual and serious climber.