After months of training, you might know a few basics about carbohydrates - such as pasta, potatoes and rice are good sources of carbohydrates, and the body turns these carbohydrates into energy. And, of course, you know that running a marathon requires an awful lot of energy.
However. you need to do more than eat a bowl of pasta the night before a race. A variety of different carbohydrate sources, such as pulses (chickpeas, kidney beans), oats and quinoa will ensure you get the best possible energy for your body.
Wholegrain options are important for fibre and are a better source of vitamins. However simpler carbs, such as white flour bread and pasta, biscuits and yoghurt, may be easier to digest around training.
RG Active explain why you need carbohydrates and the best way to load up on it before race day: