My helmet is off to you guys willing to ride the AHT. I just spent the weekend backpacking the trail in it's entirety, thinking about riding it. I couldn't imagine riding large portions because I could barely find the trail markers for the leaves! My dog got pretty good at following previous hikers scent, so I trusted her after a while. Between the greenbriars, raspberry bushes, tall grass, downed trees,and loose rocks on the ascents and descents, this seems to be much better suited to hiking than biking for me. The shelters/cabins reminded me of the AT, and I will be back with friends to hike at least portions again.