Runner's World: Marathon Fueling Guide: Carb Intake and Hydration for Race Day The Independent: Marathon fuel and hydration: How science can help runners avoid hitting the wall Marathon runners often fall short due to insufficient fuel and hydration, but The Independent’s sports editor Jack Rathborn explains how science is now helping athletes combat the prospect of cramps a ... Marathon fuel and hydration: How science can help runners avoid hitting the wall MSN: I've run 15 marathons — here are the fueling dos and don'ts I've learned along the way I've run 15 marathons — here are the fueling dos and don'ts I've learned along the way MSN: I'm running the London Marathon — here are the shoes, watches and fueling products I’m using I'm running the London Marathon — here are the shoes, watches and fueling products I’m using