What is the best fuel strategy for marathon runners?
                                
                                
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                                    4 min read                                
                            
                                According to sports dietitians, an average marathon runner can deplete their glycogen stores, the body's primary fuel source, in just 90-120 minutes without proper fueling. Understanding what is the best fuel strategy for marathon training and race day is critical to avoid 'hitting the wall' and maintaining peak performance across the full 26.2 miles.