I challenge anyone to keep up with Dean Karnazes. This man is insane...I used to windsurf the same beaches with this guy and met him on a number of occasions.
The bigger question is this: Is he running away from or toward something? Or is it, like old Doc Sheehan used to say, that he runs becuase he is an Animal, and a Child...
Why? Why would a healthy, professionally successful, happily married father of two volunteer to run for 75 hours straight, putting one foot in front of the other, over and over and over again, for 262 miles?
...In his memoir, Karnazes does make an attempt to address the big "Why?" and to try to find rationality in his behavior. But there is no simple explanation.
He loves running, adores the simplicity and solitude of it. He's wild for a challenge — the more difficult, the better. He savors suffering, relishes escape and thrives on his obsession. He admits that his dedication "borders on psychotic," but he believes his addiction to pushing himself to tackle increasingly longer distances is overwhelmingly positive.