Check out
this story about a 400 pound former Marine who in an attempt to lose weight, is walking across the entire country from San Diego to NYC on old Route 66.
So far he's made it to Flagstaff, AZ since he started on April 10th and has already lost 50 pounds. He's seems to have gone through quite a bit already; the flu, horrible blisters, loosing toenails, dehydration, and more.
Check out his website here for more info.