The Appalachian Trail is over 2,000 miles long and runs from Georgia all the way to Maine. Mark grew up close to the trail in Virginia and had hiked a few hundred miles of it, so it had always been a goal of his to do the whole thing. Well, he finally did it! The trip took 162 days hiking from sunrise to sunset, and he did it by himself. Although there were many mental and physical barriers to overcome, he says it was truly an incredible experience.