If you happen to be in Kentucky or Tennessee, you arent far from a great hiking or backpacking trail or area. A couple of top spots include Big South Fork National River and Recreation Area and Mammoth Cave National Park.
Backpackcamp.com offers info on Big South Fork, Savage Gulf, Red River Gorge, Mammoth Cave and more areas in Kentucky, Tennessee and Indiana.
info on finding the perfect outdoor trail, try Trails.com. They have over 30,000 maps for you to browse.
AllTrails has a lot of good info on finding your next great trail.
Gorp has a great list of places to go as well as tips and guides.