The AT is strictly a hiking trail. Also, it can be difficult going on foot. Trying to ride it is not a good idea and horribly inappropriate. It is not as if there are not plenty of great road rides in northern Georgia. The climb up Brasstown Bald maxes out at 28% which should be enough abuse to satisfy anyone. Also, you can down load the route for the Six Gap Century if you have the notion of frying your legs.