Any experienced marathoner will tell you that pre-race nutrition is one of the most important aspects of running a successful race. For me personally, it wasn't until my third marathon that I felt completely satisfied with the amount of fuel in the tank.
For those of you still tinkering with your plan, you may be interested in what scientist Ben Rapoport calls the formula for perfect marathon nutrition. Rapoport, a long-time runner and engineer, studied runners and their nutritional needs and created the formula that can be used to calculate the number of calories needed to run a given distance at a given pace without bonking.
To find out how many carbohydrates you need before the event, go to endurancecalculator.com and plug in your weight, age, resting heart rate, and target finishing time!
** I would strongly suggest testing this formula during longer training runs prior to giving it a go on race day.
Via: Outside Magazine
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