is Dean Karnazes.
He is one hell of a man. Ran 199 miles and did 50 marathons in 50 days in 50 states. That is too much for me. I wish i had maybe 50 percent of him. I loved hes book called ULTRAMARATHON MAN: CONFESSIONS OF AN ALL-NIGHT RUNNER. It an old book but I cant help but says its a great book for motivations.