"With the body under considerable stresses and the race consuming an entire day's worth of calories, conventional wisdom says completing a marathon is a physical ordeal for which you have to prepare. Add cramps, chafing, dizziness and dehydration into the mix, and the 26-mile mission can push the human body to its limits." - M F

I've known a couple of people who have, but you have to be in really good shape otherwise - Shevonne

Me? No way :) - Eivind

I doubt you could run continuously or complete it in the maximum amount of time allotted without training. Twenty-six miles is incredibly hard on the body. I know a couple runners who have quit because of joint problems. - Lit