Tasty Tuesday: Fueling for Different Distances

Tasty Tuesday: Fueling for Different Distances

Published on: 18 Mar 2025

Author: Phil Knox

Categories: Blogs Physio Corner

As you progress in your running journey, your nutrition needs will evolve based on the distances you’re training for, from your, first 5K, to aiming for a 10K personal best, and even preparing for a marathon. Understanding how to fuel appropriately for each race can be the difference between reaching the finish line strong or feeling depleted halfway through.

In this week’s Tasty Tuesday, we’ll break down the nutrition strategies for three common race distances: 5K, 10K, and marathon. We’ll cover what to eat before, during, and after each race, ensuring you have the energy and nutrients you need to perform at your best.

Fueling for a 5K: Quick and Efficient

A 5K is a short but intense race, often completed in 30 minutes to an hour. Since the race is relatively quick, you won’t need to rely heavily on mid-race fuel, but it’s still important to ensure you're properly energised before you start.

  • Pre-Race: A light meal or snack 30–60 minutes before the race is ideal. Focus on easily digestible carbohydrates and a small amount of protein for sustained energy.
    • Example: A slice of toast with peanut butter, or a banana with a few nuts.
  • During the Race: For most runners, water is sufficient for a 5K, as you’ll likely finish before dehydration becomes a concern.
  • Post-Race: Focus on recovery with a mix of carbohydrates and protein to help replenish glycogen stores and support muscle repair.
    • Example: A smoothie with fruit and a scoop of protein powder, or a yoghurt with granola.

Key Tip: The 5K race is fast and furious, so make sure you’re well-hydrated in advance. Hydration is often more important than food for this distance.

Fueling for a 10K: Maintaining Steady Energy

The 10K is a middle-distance race that requires a more strategic approach to nutrition. While it’s still a relatively short race, you’ll need more sustained energy to maintain a steady pace throughout the event.

  • Pre-Race: Have a solid breakfast 2–3 hours before the race, focusing on carbs, moderate protein, and a small amount of healthy fats. This will help top up your glycogen stores without weighing you down.
    • Example: Porridge with banana and honey, or a bagel with cream cheese and a side of fruit.
  • During the Race: Most runners can get by with just water, but if it’s a particularly warm day or you tend to sweat heavily, consider carrying a small electrolyte drink or sports gel.
    • Example: A sports gel or a small handful of raisins at the halfway mark.
  • Post-Race: Recovery for a 10K is similar to a 5K, with a focus on replenishing glycogen and repairing muscles. Aim for a snack or meal within 30 minutes to an hour.
    • Example: A chicken wrap with wholegrain bread or a protein smoothie with a piece of fruit.

Key Tip: In a 10K, managing your pacing is important. Make sure you’re not going out too fast in the first half to avoid hitting the wall in the later stages.

Fueling for a Marathon: Long and Steady

The marathon is the ultimate test of endurance and strategy. Running 42.195 kilometres means your nutrition needs will be more complex. Proper fuel management is critical from start to finish to avoid hitting the dreaded "wall."

  • Pre-Race: Carbo-loading is a well-known strategy for marathon runners. The idea is to maximise glycogen stores in the muscles and liver in the days leading up to the race.
    • Example: A carbohydrate-rich meal like pasta with a light sauce the night before the race, and a breakfast of porridge, toast with jam, or a bagel with peanut butter on race morning.
  • During the Race: For marathons, you’ll need to refuel mid-race to maintain energy levels and prevent glycogen depletion. This usually means energy gels, chews, or even sports drinks.
    • Example: Consume an energy gel every 45 minutes to an hour, and make sure to stay hydrated with water or electrolyte drinks at regular intervals.
  • Post-Race: Post-marathon recovery requires a balanced meal to help restore glycogen and support muscle repair. Aim for a combination of carbs, protein, and healthy fats.
    • Example: A lean protein like chicken or fish, whole grains like brown rice or quinoa, and plenty of vegetables. Don't forget to drink plenty of water or an electrolyte drink to rehydrate.

Key Tip: Marathon nutrition is all about consistency. Stick to your plan, fuel early, and don’t wait until you’re starving to refuel during the race.

Adjusting Your Diet in the Days Leading Up to Your Race

While each race day nutrition plan will vary slightly based on your race distance, there are some general tips for the days leading up to any race:

  • Carb-Loading for Longer Races: For the 10K and marathon, gradually increase your carbohydrate intake a few days before the race to ensure your glycogen stores are fully stocked.
  • Hydration: Make sure you’re well-hydrated in the days before the race, but avoid overhydration on the day of the race, as it can lead to discomfort.
  • Avoid New Foods: Stick to familiar foods and meals in the days before the race to avoid any digestive issues.

In Summary

Fueling for different race distances requires a strategic approach to ensure you have enough energy to perform at your best. For shorter races like the 5K, your focus should be on quick, easily digestible foods, while longer distances like the 10K and marathon require more planning and mid-race fuel.

By adjusting your nutrition based on the demands of the race, you’ll ensure you have the right energy to finish strong and recover quickly afterwards.

Stay tuned for next week’s Tasty Tuesday!