Are you moving there, or just visiting? I don’t live there but travel there for business from time to time. I’ve ridden Turkey Run with my son and we both really enjoyed it. My son said it is his favorite. KYMBA is the local club, you can find them on Facebook. They maintain a few different trails in the area but Turkey Run works out for me. Louisville is not too far (~1.5 hrs) from Brown County State Park in Indiana, which is one of the best places in the Midwest.
If you’re going for a visit, definitely hit up the MegaCavern like rajflyboy mentioned. It seemed more dirt jump oriented when I was there but they did have some trails throughout the cavern. Granted, I mostly stayed in the dirt jump area so that may be why I found it to be more “dirt jumpy.” The reason I said to go there though was there are quite a few activities for the whole family so you could make a day of it. We did the ropes course as well and it was a blast!
Aside from KyMBA’s facebook, you can also check for the Louisville mtb group of meetup.com. They had weekly rides posted there when I passed through about a year ago, but the ride I had hoped to hit was rained out.