Scott Jurek set the American record for the 24 hour run by completing 165.284 miles. seattlepi (that's 6.88 mph or 8:43 per mile average- for 24 straight hours!)
Jurek is a vegan eats no meat or dairy products while training 140 miles a week.
He eats 5,000 to 8,000 calories a day, “and I get that all from plant sources. It’s not hard, either. I like to eat, and I don’t have to worry about weight management. All I need is a high-carbohydrate diet with enough protein and fat.” -nytimes.com
MY COMMENT: Most of us could afford to eat a little less junk. Looks like Scott is back!