Endurance events and fuelling go hand in hand. Fail to plan, then we must plan to fail. Sports nutrition is vital to achieving your goals when it comes to endurance events.

The overall energy needs for endurance athletes are high, with carbohydrates being the primary source of fuel. Athletes must consume enough carbohydrates daily to replenish muscle glycogen that is used during training. It is extremely important to realise that individual tolerance of sports products and fuel differ and that race day nutrition should be practiced during training to monitor tolerance.

Carbohydrates are the power house of fuel for our bodies, which is stored in the muscle and liver. These glycogen stores are relied upon to ensure that your blood sugar levels are stabilised and allow for optimal muscle functioning. Generally speaking , if an athlete is meeting their carbohydrate requirements (45-60% of their meals containing carbohydrates), they can stores around 2 grams of glycogen per pound of muscle tissue plus an addition 100-130g within the liver. This amount of glycogen stores can fuel energy needed to run for around 2 hours at a moderate intensity. Therefor the addition of carbohydrates are absolutely necessary during a long run in order to avoid “hitting the wall”.

Pre event fuel, should generally be low fibre, low fat (Easy to digest) carbohydrates and protein consumed 2-3 hours leading up to the race. Simple easy to digest carbohydrate include pretzels, plain bagels, bananas, white pasta, white rice, potato, sports drinks and energy bars. On race morning you should be aiming for 100-150grams of easy to digest, low fiber carbohydrates. A good example is a plain bagel with peanut butter and jam and 500ml sports drinks consumed 2-3 hours prior to the race . Include 10-20grams of protein in the 2-3 hour leading up to race to start to stabilize blood sugars. Common pre race protein sources include peanut butter, non fat milk or yoghurt, eggs and energy bars.

For events lasting more than 90 minutes, race fuel in the form of sports drinks, energy gels, bars and energy chews are recommended. To maximise carbohydrate intake into the muscle, choose products that ingredient lists include multiples type of carbohydrates such as maltodextrin, glucose, dextrose , sucrose and fructose.

After your race it is extremely important to re-fuel as this aids muscle synthesis and recovery. Aim for 50-100grams of carbs  and 10-20 grams of protein (3-4:1 ratio) in liquid form preferably. This could be something like chocolate milk (YUM) , meal replacement shakes, specialised recovery sports drinks.


  1. Make sure you recover right : Fuelling doesn’t stop when you cross the finish line. It is important to make sure you are eating after your race. This will aid immunity, increase muscle synthesis and recovery.
  2. Focus on carbs: Carbohydrates are the most important macronutrient when it comes to performance and recovery. Get your carbs calculated for you to ensure you are performing at your peak!
  3. Eat protein : Consume 15 to 20 grams of protein to kick-start muscle repair. Get it from a high-protein energy bar along with fruit, or a PB&J.
  4. Hydrate : Adequate hydration prevents dehydration and serious health complications that can occur. Add sodium to your water to aid water absorption.
  5. Watch your fibre : Fibre can cause gastro intestinal discomfort during your race, opt for low fibre options to avoid this and ALWAYS practice race day nutrition.

Written by Jenaed Brodell, Sports Dietitian, Sports Nutritionist, RD

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