The Hilliard YMCA facility is about five years old, it offer's a lot of great activities for individuals and for families. The location is easy to get too (4515 Cosgray Rd. 614-334-9622), just Northwest of old Hilliard, it's apart of Rails to Trails and the Homestead Parks system.
I've belonged to the YMCA since it opened, my favorite winter activities are the work out facilities and the indoor pool, and my summer outdoor activities are doing laps in the dedicated lap lanes in the outside pool or working out and then biking down the Rails to Trails bike system. The atmosphere is very friendly and I always feel welcomed, it's a great way to meet your neighbors too. Please visit their web for more details on the activities they offer and monthly cost. http://ymcacolumbus.org/hilliard/