Long-distance runners place high demands on their bodies. Besides intense training and sufficient rest, nutrition plays a crucial role in performance and recovery. Optimal nutrient supply helps to increase endurance performance, delay fatigue, and recover faster after training. But which nutrients are particularly important for long-distance runners? What role do macro- and micronutrients play? How can hydration be optimized?
Macronutrients: the Basis of Energy Supply
Carbohydrates are the most important energy source for long-distance runners, as they are stored as glycogen in muscles and the liver and are quickly available during exertion. A carbohydrate-rich diet ensures optimal glycogen storage, improves performance, and prevents premature fatigue. Especially before intense training sessions or competitions, targeted carbohydrate intake is important.
- Good Sources: Whole grain products (oats, whole wheat bread, quinoa), legumes, potatoes, rice, fruits (bananas, berries, apples), and vegetables (sweet potatoes, carrots, spinach).
- Recommendation: 6–10 g carbohydrates per kg body weight daily, depending on training intensity and duration. Before competitions, increased intake through carbo-loading can be beneficial.
Proteins are essential for muscle building, the repair of muscle damage, and general recovery after long running sessions. Sufficient protein intake helps to prevent muscle breakdown and promotes adaptation processes to training. Especially after tough sessions, protein intake within the first hour is crucial.
- Good Sources: Lean meat (chicken, beef), fish (salmon, tuna), eggs, legumes (lentils, beans), dairy products (quark, yogurt), nuts, and seeds.
- Recommendation: 1.2–2.0 g protein per kg body weight daily, depending on training volume and goals.
Fats are a valuable energy source, especially during long, moderate exertions. Healthy fats support cell health, promote hormone production, and contribute to a stable energy supply. They are also important for the absorption of fat-soluble vitamins (A, D, E, K).
- Good Sources: Unsaturated fatty acids from avocado, nuts (almonds, walnuts), seeds (chia seeds, flaxseeds), olive oil, and fatty fish (salmon, mackerel).
- Recommendation: Approximately 20–35% of daily calorie intake from healthy fats, depending on individual energy balance.
Micronutrients: Small Helpers with Great Impact
Iron is essential for the formation of hemoglobin, which transports oxygen in the blood. Iron deficiency can lead to fatigue, reduced performance, and increased susceptibility to infection, which can be a particular problem for female runners due to increased iron loss during menstruation.
Good Sources: Red meat, offal (liver), legumes, green leafy vegetables (spinach, kale), nuts.
Tip: Vitamin C-rich foods (e.g., bell peppers, citrus fruits) improve iron absorption from plant-based sources.
Magnesium is crucial for muscle and nerve function, as well as for energy metabolism. A deficiency can cause muscle cramps, exhaustion, and poorer recovery.
- Good Sources: Bananas, nuts (cashews, almonds), seeds (sunflower seeds, flaxseeds), whole grain products, dark chocolate (at least 70% cocoa content).
- Recommendation: 300–400 mg magnesium daily, especially after intense training sessions.
Long-distance runners put significant stress on their bones. Sufficient calcium intake contributes to bone health, reduces the risk of stress fractures, and supports muscle contraction.
- Good Sources: Dairy products (milk, cheese, yogurt), green vegetables (broccoli, kale), almonds, tofu.
- Recommendation: 1000 mg calcium daily for strong bones and improved muscle recovery.
Vitamin D promotes calcium absorption and strengthens the immune system. A deficiency can increase the risk of injury and slow down recovery.
- Good Sources: Sunlight, fatty fish, eggs, fortified foods.
- Recommendation: 800–1000 IU daily; in case of deficiency, supplementation may be necessary after medical consultation.
Hydration: the Underestimated Factor for Endurance Performance
Fluid plays a crucial role in performance and recovery. Even a slight fluid deficiency can lead to performance loss, headaches, and circulatory problems.
2–3 liters of water daily, depending on weather and training intensity.
Electrolyte-containing drinks can help replace sodium, potassium, and other important minerals.
Rehydration with water, sodium-containing drinks, or coconut water for faster recovery.
Promoting Recovery: the Right Nutrition after your Run
After training, rapid nutrient intake is essential to accelerate recovery and support muscle building.
- Within 30–60 minutes after the run: A combination of carbohydrates (to replenish glycogen stores) and proteins (for muscle repair) is ideal.
- Good Options: Bananas with peanut butter, yogurt with berries, whole wheat bread with cottage cheese, protein shakes with milk or plant-based alternatives.
Conclusion
A targeted diet with the right combination of macro- and micronutrients, along with optimal fluid intake, can help long-distance runners improve their energy efficiency, delay fatigue, and recover faster. Those who consciously adjust their diet will benefit in the long term from better endurance, lower injury risks, and overall increased performance.
