Just outside Chattanooga. Great trails, about 10 miles or so now. Basically layered rings of trails around the mountain. There's a killer downhill run on the north side. Bummer is, it's a 700 foot climb back up the single-track, worried about someone else bombing down, or a2 mile or so ride up the road. Shuttle service, anyone?
Google trails, Raccoon Mountain, TVA. It will pull up the trail map. If you drive to Georgia or Florida from here, you go right by it. It's 5 minutes off the interstate.