Ultramarathoner Tim Olson made the transition to Paleo, and it paid off for him in a big way.
"more and more endurance athletes are choosing low-carb, high-fat. They’re choosing this diet both to get over digestive problems that hit in such a demanding event, and to win the race, and win it BIG! That’s what Tim Olson did this year. A self-proclaimed low-carb eater, Tim won the race — with a record-breaking pace"