Great article in lifehacker:

Super runner Dean Karnazes – who recently ran 50 marathons in 50 days – gives Wired magazine a list of strategies he’s used to train and push himself on his long distance running feats, like his eating habits:

You wouldn’t believe the stuff Karnazes consumes on a run. He carries a cell phone and regularly orders an extra-large Hawaiian pizza. […] He’ll chase the pizza with cheesecake, cinnamon buns, chocolate éclairs, and all-natural cookies. […] When he’s not in the midst of some record-breaking exploit, Karnazes maintains a monkish diet, eating grilled salmon five nights a week. He strictly avoids processed sugars and fried foods – no cookies or doughnuts. He even tries to steer clear of too much fruit because it contains a lot of sugar. [This approach] makes him look forward to running a race, because he can eat whatever he wants.

arnazes also only sleeps about 4 hours a night and uses Krazy Glue on his blisters. This one’s a fascinating look into the mind and methods of a crazy person committed to pushing the limits of human capability.
~ Gina Trapani

Wired: The Perfect Human