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What To Eat During An Ultra Marathon What To Eat During An Ultra Marathon


What To Eat During An Ultra Marathon

Discover the featured meals to fuel your body during an ultra marathon. Find out what to eat for optimal endurance and performance.

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Welcome to the world of ultra marathons, where endurance and perseverance are pushed to the limit. Whether you’re a seasoned runner or new to the sport, one thing is certain: nutrition plays a vital role in your performance during these grueling races. Finding the right balance of nutrients can make all the difference in how you feel and perform on race day.

As an ultra marathoner, you’re pushing your body to go the distance, often covering distances of 50 miles or more. With such prolonged efforts, your body requires a steady supply of energy, hydration, and essential nutrients to keep you going. Proper nutrition before, during, and after the race can optimize your performance, enhance recovery, and prevent potential health issues.

Whether you prefer road or trail ultra marathons, the underlying principles of nutrition remain the same. Fueling your body with the right foods and fluids will help sustain your energy levels, enhance your endurance, and decrease the risk of hitting the dreaded “wall” during the race.

It’s important to note that every individual is different, and what works for one person may not work for another. It’s essential to experiment with different nutrition strategies during your training runs to figure out what works best for you. This will help you determine the ideal types and timing of food and fluids for your body.

Throughout this article, we’ll delve into the various aspects of nutrition during an ultra marathon. From pre-race fueling to during-race nutrition and post-race recovery, we’ll provide you with valuable insights and practical tips to optimize your performance and fuel your success.


Importance of Nutrition During an Ultra Marathon

When it comes to ultra marathons, nutrition is crucial. The intensity and duration of these races place immense demands on your body, making it essential to fuel yourself properly. The right nutrition can enhance your endurance, delay fatigue, and improve overall performance.

During an ultra marathon, your body relies heavily on stored carbohydrates, or glycogen, for energy. However, the body’s glycogen stores are limited and can be depleted quickly during prolonged exertion. This depletion can lead to a decrease in performance, as well as mental and physical fatigue.

To combat this, it’s crucial to consume a balanced diet leading up to the race that includes ample carbohydrates, proteins, and healthy fats. Carbohydrates are the primary source of fuel for endurance activities, providing quick energy for your muscles. Consuming complex carbohydrates, such as whole grains, fruits, and vegetables, can help sustain energy levels and maintain glycogen stores.

During the race, it’s important to replenish these glycogen stores to maintain your pace and performance. This is where strategic fueling comes into play. Consuming easily digestible carbohydrates, such as energy gels, sports drinks, or energy bars, can provide a quick source of energy without causing stomach distress.

In addition to carbohydrates, it’s essential to consume protein during the race to support muscle repair and recovery. Protein-rich snacks like energy bars with a good balance of carbohydrates and protein can be beneficial, especially during longer races.

Fat is another important component of your nutrition during an ultra marathon. While carbohydrates are the primary fuel source, incorporating healthy fats, such as nuts, avocado, or nut butter, can provide sustained energy and help prevent the breakdown of muscle tissue.

Not only is the type of food you consume important, but the timing of your nutrition during the race is crucial as well. Eating small, frequent meals or snacks every hour can help provide a steady stream of energy and prevent energy crashes.

It’s crucial to listen to your body’s cues during the race. Your appetite might decrease due to exertion and heat, but it’s important to consume enough calories and fluids to sustain your energy levels. Ignoring your body’s signals can lead to fatigue, dehydration, and even more severe consequences.

Remember, everyone’s nutritional needs and tolerances are different, so it’s important to experiment during your training runs to find the nutrition strategy that works best for you. Consulting with a sports nutritionist can also provide tailored advice and help optimize your race-day nutrition plan.


Pre-Race Nutrition

Preparing yourself nutritionally before an ultra marathon is just as important as the race itself. Your body needs to be properly fueled and hydrated in order to perform at its best during the race. Here are some key considerations for your pre-race nutrition:

  1. Carbohydrate Loading: In the days leading up to the race, you should focus on consuming a diet rich in carbohydrates. This will help maximize your glycogen stores and provide a readily available source of energy during the race. Foods such as pasta, rice, potatoes, and whole grains are excellent choices.
  2. Hydration: Proper hydration before the race is crucial to maintain optimal performance. Drink plenty of fluids in the days leading up to the race to ensure you are properly hydrated. Water, sports drinks, and electrolyte-rich beverages can all contribute to hydrating your body and replenishing essential minerals.
  3. Meal Timing: It’s important to plan your meals carefully to ensure you have enough time to digest before the race. Consuming a large meal too close to the start time can lead to discomfort and digestive issues. Aim to eat a balanced meal containing carbohydrates, protein, and fats about 2-3 hours before the race. This will give your body enough time to process and absorb the nutrients.
  4. Suggested Pre-Race Meal: A good pre-race meal option could include a combination of easily digestible carbohydrates, such as oatmeal or whole-grain toast, paired with a lean source of protein like eggs or yogurt. Adding a small amount of healthy fats, such as nut butter or avocado, can help provide sustained energy.
  5. Snacks: If you need a small energy boost closer to the race, opt for easily digestible snacks that are high in carbohydrates. Examples include energy bars, bananas, or a small handful of nuts.

Remember, everyone’s digestive system is different, so it’s essential to test different pre-race meals and snacks during your training to find what works best for you. Pay attention to how your body responds to different foods and adjust accordingly.


During-Race Nutrition

When you’re in the midst of an ultra marathon, fueling your body properly becomes a top priority. The main goal is to maintain a steady supply of energy and prevent depletion of glycogen stores. Here are some key factors to consider for your during-race nutrition:

  1. Carbohydrate Intake: During the race, aim to consume approximately 30-60 grams of carbohydrates per hour. This can come from a combination of energy gels, sports drinks, energy bars, or whole foods like bananas and dates.
  2. Timing: It’s important to establish a regular schedule for consuming carbohydrates during the race. Most runners find it beneficial to consume small amounts of carbohydrates every 30-45 minutes to maintain a consistent flow of energy. Experiment during your training runs to find the optimal timing that works for you.
  3. Hydration: Alongside carbohydrates, hydration is essential during an ultra marathon. Drink fluids regularly throughout the race, aiming for about 6-8 ounces every 20 minutes. Electrolyte-enhanced beverages can help replenish the electrolytes lost through sweat. Remember to listen to your body and adjust your fluid intake based on conditions such as temperature and exertion level.
  4. Electrolytes: Ultra marathons can cause electrolyte imbalances due to the loss of sodium, potassium, and other minerals through sweat. Consider using electrolyte tablets or drinks to help maintain the balance of these essential minerals and prevent muscle cramps.
  5. Protein: While carbohydrates should be the primary focus during the race, some runners find consuming small amounts of protein beneficial for muscle repair and recovery. Incorporate protein-rich snacks, such as energy bars with a balanced ratio of carbohydrates and protein, into your nutrition plan.
  6. Portable Fuel: Choose compact and easily digestible fuel sources that are convenient to carry and consume during the race. Energy gels, chews, or small snacks like pretzels or dried fruit can be easily stashed in pockets or a race pack for quick and accessible fuel.

Remember, practice your during-race nutrition plan during your training runs to ensure you are comfortable with the timing and types of fuel you consume. Every individual is different, so it’s essential to find what works best for you and avoid experimenting with new products or foods on race day.


Hydration Strategies

Proper hydration is crucial during an ultra marathon to maintain performance, prevent dehydration, and support overall health. Here are some key hydration strategies to consider for your race:

  1. Pre-Hydration: Begin hydrating well before the race starts. Aim to consume at least 16-20 ounces of water or electrolyte-rich beverages a few hours before the race to ensure you start off well-hydrated.
  2. During-Race Hydration: During the race, establish a regular schedule for drinking fluids. Aim to consume 6-8 ounces of fluids every 20 minutes. This can include water, electrolyte-enhanced drinks, or a combination of both. Adjust your intake based on weather conditions, exertion level, and personal sweat rate. Electrolyte drinks can be especially beneficial for replenishing the electrolytes lost through sweat.
  3. Monitor Hydration Levels: Pay attention to your body’s hydration cues. Signs of dehydration include dark and infrequent urine, dry mouth, excessive thirst, and dizziness. It’s important to drink enough to maintain clear or pale yellow urine and prevent these symptoms.
  4. Sweat Loss: Familiarize yourself with your personal sweat rate during training runs. Weigh yourself before and after a run to get an estimate of how much fluid you lose through sweat. For every pound lost, aim to consume 16-24 ounces of fluids to replenish the loss.
  5. Electrolyte Replacement: Ultra marathons can cause electrolyte imbalances due to the loss of sodium, potassium, and other minerals through sweat. Consider using electrolyte tablets or drinks to help maintain the balance of these essential minerals and prevent cramping or hyponatremia (low sodium levels).
  6. Hydration Pack or Belt: Utilize a hydration pack or belt to have hands-free access to water or fluids during the race. This allows you to hydrate regularly without needing to rely on aid stations, which may not align with your hydration schedule.
  7. Practice Hydration: Just as you practice your nutrition and training, it’s important to practice your hydration plan during training runs. Experiment with different fluids, electrolyte formulas, and hydration schedules to find what works best for you.

Remember, every individual has different hydration needs, so it’s crucial to find your own hydration strategy through experimentation during training. Develop a plan that keeps you adequately hydrated and optimizes your race performance.


Recovery Nutrition

After completing an ultra marathon, your body needs proper nutrition to recover, repair damaged muscles, and replenish depleted energy stores. The following recovery nutrition strategies can help facilitate optimal recovery:

  1. Immediate Rehydration: Begin the recovery process by rehydrating as soon as possible after the race. Drink fluids containing electrolytes to restore fluid and electrolyte balance.
  2. Carbohydrate Refueling: Consume carbohydrates within the first 30-60 minutes after the race. This helps replenish glycogen stores and initiates muscle recovery. Opt for easily digestible carbohydrates like fruits, sports drinks, or energy gels.
  3. Protein Intake: Consuming protein after an ultra marathon is essential for muscle repair and growth. Aim to consume about 20-30 grams of high-quality protein within the first hour of finishing the race. This can come from sources like lean meats, dairy products, eggs, or plant-based protein sources like legumes or tofu.
  4. Anti-Inflammatory Foods: Include foods with anti-inflammatory properties in your recovery meals to help reduce inflammation and promote muscle healing. Examples include fatty fish like salmon, nuts, seeds, leafy greens, and berries.
  5. Balanced Meals: As your appetite returns, focus on consuming balanced meals that include a combination of carbohydrates, proteins, and healthy fats. This helps support muscle repair and ongoing recovery. Incorporate whole grains, lean proteins, and vegetables into your meals.
  6. Hydration: Continue to hydrate adequately in the hours and days following the race to replenish any fluid and electrolyte losses. Water, electrolyte-rich beverages, and hydrating foods like fruits and vegetables can contribute to effective rehydration.
  7. Rest and Sleep: In addition to nutrition, prioritize rest and sleep as part of your recovery process. Adequate rest allows your body to repair and rebuild damaged tissues.
  8. Professional Guidance: Consider seeking guidance from a sports nutritionist or a healthcare professional who specializes in endurance athletes. They can provide personalized advice and optimize your recovery nutrition plan based on your individual needs and goals.

Remember, recovery nutrition is crucial for optimizing performance in future races and minimizing the risk of injury or burnout. Take the time to prioritize your recovery and provide your body with the nutrients it needs to bounce back.



As an ultra marathoner, your nutrition plan is a key component of your training and race day strategy. The right nutrition can enhance performance, improve endurance, and support overall health and well-being. By considering factors such as pre-race nutrition, during-race fueling, hydration strategies, and recovery nutrition, you can optimize your performance and maximize your potential as an athlete.

During your training runs, take the time to experiment with different types and timing of nutrition to find what works best for you. Each runner is unique, and it’s important to listen to your body and adjust your nutrition plan accordingly.

Remember that nutrition is not a one-size-fits-all approach. It’s essential to consult with a sports nutritionist or healthcare professional who specializes in endurance athletes to receive personalized guidance based on your individual needs and goals.

In your ultra marathon journey, prioritize a balanced diet rich in carbohydrates, proteins, and healthy fats. Stay hydrated, practice fueling during your training runs, and focus on recovery nutrition to optimize your performance and ensure a successful race.

Running an ultra marathon is a significant physical and mental challenge, but with proper nutrition, you can fuel your success and achieve your goals. So, lace up your shoes, fuel your body, and hit the trails or pavement with confidence, knowing that you have the knowledge and strategies to conquer your next ultra marathon.