{"id":233679,"date":"2025-11-17T12:53:16","date_gmt":"2025-11-17T11:53:16","guid":{"rendered":"https:\/\/crownsportnutrition.com\/?p=233679"},"modified":"2025-11-18T12:00:28","modified_gmt":"2025-11-18T11:00:28","slug":"marathon-fueling-strategy-for-a-4-hour-finish-2","status":"publish","type":"post","link":"https:\/\/crownsportnutrition.com\/en\/marathon-fueling-strategy-for-a-4-hour-finish-2\/","title":{"rendered":"MARATHON FUELING STRATEGY FOR A 4-HOUR FINISH"},"content":{"rendered":"\n

How to nutritionally approach a 4-hour marathon<\/strong><\/h3>\n\n\n\n

Last year, I had the opportunity to write an article for Crown Sport Nutrition about how to prepare nutritionally for a 3-hour marathon<\/strong>. This year, the focus shifts to those aiming to complete the marathon in 4 hours<\/strong>. If this is your goal, I encourage you to reread the previous article, as it also provides valuable recommendations for runners targeting the 4-hour challenge.<\/p>\n\n\n\n

As sports Dietitians\u2013Nutritionists, we often focus on the fastest or most visible athletes. However, if we take a broader perspective, who are the athletes we can truly help the most?<\/p>\n\n\n\n

The profiles of those aiming to finish a 4-hour marathon<\/strong> are diverse: some are first-timers, others see it as a personal challenge, or even as a \u201ccelebration\u201d without wanting to suffer too much. Still, most share two main concerns:<\/p>\n\n\n\n

\u2013 Avoid physical issues during training.
\u2013 Prevent gastrointestinal problems on race day.<\/p>\n\n\n\n

Regardless of level, every runner looking to complete a marathon in 4 hours must:<\/p>\n\n\n\n

    \n
  1. Ensure adequate rest between training sessions.<\/li>\n\n\n\n
  2. Follow an individualized nutritional strategy adapted to their lifestyle and training load.<\/li>\n\n\n\n
  3. Train the digestive system with clear goals based on fitness level and race pace.<\/li>\n<\/ol>\n\n\n\n

    In consultations, we often observe that many runners follow predefined training plans based on target finish time, which can imply very different effort levels for each athlete. For one runner, a given workout might feel like 6\/10 effort, while for another, the same session could feel like 9\/10.<\/p>\n\n\n\n

    Dietitians\u2013Nutritionists must interpret these differences and adjust nutrition and fueling strategies based on each athlete\u2019s demands. This is essential for designing an optimal fueling plan for marathon day.<\/p>\n\n\n\n

    \n\n\n\n

    Fueling strategies for a 4-hour marathon<\/strong><\/h2>\n\n\n\n

    We will propose two fueling scenarios based on effort level:<\/p>\n\n\n\n

      \n
    1. Runners with high cardiovascular and metabolic demand<\/strong>, who push themselves significantly at their race pace.<\/li>\n\n\n\n
    2. Runners whose priority is maintaining steady pace<\/strong>, where mechanical demand (impact and muscle fatigue) is higher than metabolic load.<\/li>\n<\/ol>\n\n\n\n

      In both cases, two days before the race, it is recommended to reinforce hydration by drinking 1 liter per day of a hypotonic drink, prepared by diluting one sachet of Crown Sport Nutrition\u2019s Isodrink in 1 liter of water.<\/p>\n\n\n\n

      \n\n\n\n

      First proposal: Fueling plan for high cardiovascular and metabolic demand<\/strong><\/h2>\n\n\n\n

      In this strategy, runners who push within their race pace require a nutritional approach suited to their metabolism. It is important to remember that although they train, rest, and eat well, not all athletes metabolize energy in the same way.<\/p>\n\n\n\n

      To illustrate this, think of cars. While all vehicles need fuel and oil, there is a big difference in consumption between a regular car and a race car. The same applies here: more demanding runners have higher energy needs, but as a general rule, they will not need more than 60 g of carbohydrates per hour. However, some individuals may require more depending on their characteristics.<\/p>\n\n\n\n

      Fueling plan<\/strong><\/h3>\n\n\n\n

      Before the start \u2014 warm-up (15\u201320 min prior):<\/strong>
      \u2022 1 Energy Gum Bar<\/p>\n\n\n\n

      Carbohydrate distribution: 240 g total<\/strong><\/p>\n\n\n\n

      Hydration plan: 80 g CHO<\/strong><\/h3>\n\n\n\n

      \u2013 Prepare 500 ml of water with 3 scoops of Isodrink.
      \u2013 500 ml of isotonic drink every 2 hours of racing (total: 1 liter).
      \u2013 Depending on temperature and humidity, drink small sips of water from aid stations.<\/p>\n\n\n\n

      Intake plan: 160 g CHO<\/strong><\/h3>\n\n\n\n