Dante Carrillo
Running is an excellent form of exercise, and for those who are avid runners, ensuring proper nutrition is essential to performing and feeling your best. A runner's diet typically includes a balance of the three macronutrients: carbohydrates, proteins, and fats. The types of food you eat can play a major role in your energy levels, performance, and recovery. This paragraph will explore the fundamentals of a runner's diet and how it can enhance your running experience.
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What You'll Learn
Carbohydrates are key
Carbohydrates are a runner's most accessible form of energy. They are key to a runner's diet as they provide fuel for endurance training and are easily broken down during exercise.
The body uses both glucose in the blood and glycogen stores in the liver and muscles as fuel for endurance exercise. Glycogen is the primary fuel source for endurance exercise, and it is derived from eating carbohydrates. When glycogen stores are depleted, runners are more likely to run out of energy and "hit a wall". Therefore, it is important to eat enough carbohydrates to ensure these energy stores are full and ready to support your training.
The recommended daily intake of carbohydrates for runners is between 45% and 65% of total daily calories. Some sources suggest that runners can go up to 70% of their daily calories from carbs, especially if they are training at higher intensities and running longer distances. On rest and easy training days, you can prioritise protein and fats over carbohydrates, as these days require fewer carbs to fuel your training.
Carbohydrate loading, or carb loading, is a strategy that can be beneficial for runners preparing for a race. It involves increasing carbohydrate intake in the days leading up to a race to maximise glycogen stores. However, it is important to allow your body to rest during this time so that it can store what you are ingesting. The recommended amount of carbohydrate grams varies from person to person, but in general, evidence shows that carb loading can be beneficial prior to a distance event. Casual runners may not need to carb load, and they can simply ensure their day-to-day diets include extra carbohydrates.
It is important to choose healthy sources of carbohydrates. Healthy high-carb foods include fruits, vegetables, whole grains, beans, and nuts. These foods also provide the body with essential vitamins, minerals, and fibre.
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Protein-rich foods are important
A runner's diet should be high in protein-rich foods to promote muscle repair and recovery. Protein is essential for rebuilding stressed muscles after a run, and it is recommended that runners consume 0.4g/kg of body weight, four to six times a day. This can be achieved through a diet that includes animal-protein foods such as dairy, meat, fish, and eggs, which are complete sources of amino acids.
Fish and other seafood are particularly good sources of protein for runners, as they provide additional nutrients such as zinc, copper, and chromium, which are often lacking in a runner's diet. The omega-3 fats found in fish, especially those from cold waters, have been linked to a reduced risk of heart disease and improved mental health.
Runners can also obtain protein from plant-based sources such as seeds, beans, and nuts, which offer additional health benefits. These foods are high in fibre and contain bioactive compounds that act as antioxidants, improving overall health and aiding in weight control.
It is important to distribute protein-rich foods throughout the day to maintain a balanced diet and ensure adequate protein intake. This can be complemented by sports nutrition products such as protein bars, especially for those who struggle to get all their required nutrients from whole foods.
In addition to protein, runners should focus on consuming adequate carbohydrates and healthy fats. Carbohydrates are the body's primary source of energy during endurance exercise, while fats provide essential fatty acids and aid in the absorption of fat-soluble vitamins. A balanced diet that includes a variety of whole foods ensures that runners get the micronutrients, vitamins, and minerals needed to support their training and overall health.
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Micronutrients and antioxidants
Micronutrients are one of the major groups of nutrients and are vital for human health. They aid enzymes and proteins in their function. For example, B vitamins are needed for carbohydrate and fat metabolism, while vitamin C, along with zinc, is important for a healthy immune system. Magnesium and calcium are vital for good muscle contraction.
A runner's diet should include a balance of macronutrients (carbohydrates, proteins, and fats) and micronutrients from plant foods. Micronutrients and antioxidants play a key role in muscle function and recovery. Carbohydrates are the body's main energy source and are critical for long-distance running. When you consume them, your body breaks them down into glucose, which is a vital energy source for humans. Antioxidants help decrease cell damage caused by oxidation from intense exercise. Antioxidants such as vitamin C, E, and beta-carotene can play important roles in protecting cell membranes from oxidative damage. The best source for these nutrients is a diet rich in antioxidant foods (like fresh fruit and vegetables).
Vitamin D is important for bone health because it supports calcium and phosphorus absorption. It may also contribute to muscle metabolism and function. You can get it from sun exposure, supplements, and vitamin-D-rich foods. Calcium is a major player in bone health and muscle contraction. Most people consume enough in their diet from calcium-rich foods, including dairy products and leafy greens.
Iron is crucial for the development of red blood cells, which deliver oxygen to working muscle cells. Distance runners, vegetarians, and vegans may need higher than the recommended dietary intake—greater than 18 mg per day for women and 8 mg per day for men.
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Iron and vitamin C
A runner's diet is crucial to their energy levels, performance, and recovery. One of the key considerations for runners is iron intake, which is essential for red blood cell development and oxygen transport to working muscle cells. Female runners, in particular, are prone to low iron levels due to menstrual blood loss. Distance runners, vegetarians, and vegans may require higher iron intake, and it is recommended that they monitor their iron levels through diet and supplements. Good food sources of iron include lean meat, oysters, egg yolk, dark green leafy vegetables, legumes, dried fruit, and whole grain or enriched cereals and bread.
Vitamin C is another vital component of a runner's diet, aiding in iron absorption. It is found in many fruits and vegetables, such as citrus fruits, bell peppers, and berries. Runners in intense training or under stress may benefit from additional Vitamin C, as it helps enhance resistance to upper respiratory tract infections. Vitamin C also works with collagen to strengthen skin and joints, aiding in wound management.
In addition to iron and vitamin C, runners should focus on consuming a balanced diet that includes carbohydrates, proteins, and healthy fats. Carbohydrates are essential for energy stores, while proteins aid in muscle recovery. Healthy fats, such as omega-3 from oily fish, are important for absorbing fat-soluble vitamins and providing essential fatty acids. Overall, a well-rounded diet that includes a variety of whole foods ensures runners obtain the necessary micronutrients and antioxidants for optimal performance and recovery.
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Healthy fats
Fat is a macronutrient composed of individual fatty acids, which play multiple roles in the body. These fatty acids are essential for cellular function, protecting organs, promoting brain health, and regulating cholesterol and blood pressure levels. Consuming healthy fats can lower triglyceride levels and raise HDL (good) cholesterol, which is beneficial for heart health. Additionally, adequate fat intake helps the body absorb fat-soluble vitamins, including vitamins A, D, E, and K, ensuring runners meet their vitamin requirements.
When incorporating healthy fats into a runner's diet, it is important to focus on unsaturated fats, such as omega-3 fatty acids. Omega-3s are found in foods like fatty fish (oily fish like salmon and mackerel), walnuts, flaxseeds, chia seeds, avocado oil, and olive oil. These fats have anti-inflammatory properties, which can help alleviate exercise-induced muscle soreness and promote faster recovery. They also provide essential fatty acids that the body cannot produce itself, supporting overall health and immune function.
It is recommended that endurance runners obtain 20-35% of their total energy intake from fat, which equates to approximately 0.5 to 1.5 grams of fat per kilogram of body weight daily. However, it is important to be mindful of the timing of fat intake. Runners should limit their fat consumption in pre-exercise meals, especially those eaten within a couple of hours of working out, to prevent gut distress during endurance exercise.
While healthy fats are essential, it is also crucial to limit the intake of unhealthy saturated fats. Consuming too much saturated fat can increase harmful cholesterol levels, leading to a higher risk of heart disease. Foods high in saturated fats include cakes, biscuits, pies, fatty meats, sausages, and bacon, as well as trans fats found in processed foods.
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Frequently asked questions
A runner's diet typically includes a balance of the three macronutrients: carbohydrates, proteins, and fats. Micronutrients, such as vitamins and minerals, are also essential.
Carbohydrates are the body's most accessible form of energy, as they break down easily during exercise. Consuming about 45-65% of total daily calories from carbohydrates is a good goal for most runners.
The suggested protein consumption for runners is 0.4g/kg of body weight four to six times a day, depending on training load.
Yes, iron and calcium are crucial for runners. Iron is essential for the development of red blood cells, which deliver oxygen to working muscle cells. Calcium is important for bone health, especially in female runners, to avoid loss of bone mineral density.
Good food sources for runners include oily fish (such as salmon and mackerel) for omega-3 fats, dairy products, seeds, and a variety of fruits and vegetables.
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