Anyone know of great places to travel within 8-10 hours of cincinnati with teenage boys?

I am planning a 4-5 day trip with my 14 year old son and a friend in July. I was looking for something fun that is close enough to drive to, without exhausting me. The boys are very active and love sports and outdoors. Gatlinburg is out, we've been there a few times and they dont want to go there.