A marathon is a true metabolic challenge. Finishing a marathon at a fairly consistent pace is not an easy thing to do. The most common cause of ‘hitting the wall’ is a depletion in muscle glycogen. Running too fast, too soon risks rapidly depleting available fuel for working muscles.
A smart, strategic fuelling strategy that considers sweat losses and individual carbohydrate requirements and replenishment, both during training and on event day, combined with practised pacing is paramount to running a good race.