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What to eat to increase running speed?: A Comprehensive Guide to Your Runner's Diet

5 min read

According to a study published in Medicine & Science in Sports & Exercise, endurance runners who consumed a high amount of protein ran a 5K 1.5% faster. Mastering what to eat to increase running speed is about more than just fuel; it's about strategically managing your body's energy, recovery, and overall performance through diet.

Quick Summary

Optimal running speed requires a strategic nutrition plan focused on proper fueling, timely recovery, and consistent hydration. Learn about the key macronutrients and micronutrients that support peak performance and how to implement effective meal timing strategies.

Key Points

  • Prioritize Carbohydrates: Utilize complex carbs for daily energy and simple carbs for quick, pre-run fuel to maximize speed and endurance.

  • Time Your Meals Strategically: Eat full, carb-heavy meals 2-4 hours pre-run and small, simple carb snacks 30-60 minutes before to prevent fatigue.

  • Focus on Post-Run Recovery: Consume a 3:1 carb-to-protein ratio within an hour of finishing to restore glycogen and repair muscles effectively.

  • Stay Hydrated and Balanced: Maintain consistent hydration throughout the day and use electrolyte drinks during longer runs to replace salts lost through sweat.

  • Boost Performance with Micronutrients: Ensure adequate intake of iron, calcium, magnesium, and potassium to support oxygen transport, bone strength, and muscle function.

  • Avoid GI Distress: Limit high-fat, high-fiber, and spicy foods before running to prevent stomach upset that could impact your pace.

In This Article

A successful running journey, especially when aiming for increased speed, is powered by intelligent nutrition. Food is more than just sustenance; it's the fuel that allows your body to perform, adapt, and recover. For runners, this means understanding how to use carbohydrates for quick and sustained energy, protein for muscle repair, and a variety of micronutrients for overall health. This guide breaks down the essential nutritional components and timing strategies to help you get faster.

The Core Macronutrients for Speed

Getting faster requires a deep understanding of your macronutrients: carbohydrates, protein, and fat. Each plays a distinct role in fueling your performance and recovery.

Carbohydrates: Your Primary Fuel Source

Carbohydrates are your body's most efficient source of energy. They are broken down into glucose and stored as glycogen in your muscles and liver. During a run, especially at higher intensities, your body relies heavily on these glycogen stores.

  • Complex vs. Simple Carbs: Not all carbs are the same. Complex carbohydrates, found in whole grains, oats, and starchy vegetables, release energy slowly and are ideal for day-to-day fueling. Simple carbohydrates, such as those in fruit and sports drinks, provide a rapid energy boost and are best for pre-run snacks or mid-run fueling.
  • Carb Timing: Strategic carbohydrate timing is crucial. Eat a carb-rich meal several hours before a run to fill your glycogen stores. For runs lasting over an hour, consuming 30-60 grams of simple carbs per hour can prevent fatigue.

Protein: The Repair and Rebuild Engine

Protein is critical for muscle repair and rebuilding the tissue that is broken down during training. A stronger body leads to more speed and resilience against injury. Aim for a consistent protein intake throughout the day rather than one large meal.

  • Recovery Window: Consuming a mix of carbohydrates and protein within 30-60 minutes after a run is ideal for maximizing glycogen replenishment and muscle repair. A ratio of 3:1 (carbs to protein) is often recommended.
  • Sources: Incorporate lean proteins like chicken, fish, eggs, and legumes into your meals.

Healthy Fats: Sustained Energy for Endurance

Healthy fats provide a slow-burning energy source, which is particularly beneficial for longer runs and endurance. They also play a role in hormone production and vitamin absorption.

  • Timing: Avoid high-fat meals right before a run, as they can slow digestion and cause discomfort. Instead, spread healthy fats throughout your day.
  • Sources: Include omega-3-rich foods like salmon, nuts, seeds, and avocados.

Timing Your Nutrition for Peak Performance

When you eat can be as important as what you eat. Here's how to structure your meals around your runs:

  • Pre-Run (2-4 hours before): Consume a balanced meal rich in complex carbohydrates and moderate protein. Examples include a bagel with peanut butter and a banana or a bowl of oatmeal with berries.
  • Pre-Run (30-60 minutes before): Opt for a small, easily digestible snack with simple carbs for a quick energy boost. Try a banana, energy gel, or a handful of pretzels.
  • During a Run (over 60-90 minutes): Replenish glycogen stores with 30-60 grams of carbohydrates per hour. This can be achieved through sports drinks, energy gels, or easily digestible snacks like gummy bears or dried fruit.
  • Post-Run (30-60 minutes after): Refuel with a carb and protein combination to kickstart recovery. Options include chocolate milk, a smoothie with protein powder and fruit, or Greek yogurt with granola.

The Micronutrient Advantage: Beyond the Macros

Micronutrients—vitamins and minerals—regulate vital body functions that support speed, endurance, and injury prevention.

  • Iron: Essential for oxygen transport to working muscles. Low iron can lead to fatigue and reduced performance. Sources include lean meats, legumes, and dark leafy greens. Pairing with vitamin C can boost absorption.
  • Calcium and Vitamin D: Crucial for bone health, helping to prevent stress fractures. Dairy products, fortified plant milks, and leafy greens are good sources.
  • Magnesium and Potassium: These electrolytes are vital for muscle function and preventing cramps. Bananas, nuts, seeds, and leafy greens are excellent sources.

Fueling Strategy Comparison: Short vs. Long Runs

Aspect Short Runs (<60 minutes) Long Runs (>90 minutes)
Pre-Run Fuel A light, easily digestible carb snack (e.g., banana) is sufficient, but often not necessary for runs under 30 minutes. A solid, carb-heavy meal 2-4 hours prior, potentially with a small carb snack closer to start time.
Mid-Run Fuel Not typically needed, as your body's stored glycogen is sufficient. Essential to consume 30-60g of carbs per hour via gels, chews, or sports drinks.
Post-Run Recovery A balanced meal with protein and carbs is fine, but the timing is less critical than for longer efforts. Critical to consume carbs and protein within 30-60 minutes to maximize glycogen replenishment and muscle repair.
Hydration Focus Focus on being well-hydrated before the run. Crucial to hydrate before, during (with electrolytes), and after to replace significant fluid loss.

Sample Meal Plan for a Training Day

Here is an example of a day's eating to fuel your runs:

  • Breakfast (Pre-Run): Oatmeal with sliced banana, a tablespoon of peanut butter, and a sprinkle of chia seeds. Served with a glass of water.
  • Lunch: A turkey and cheese sandwich on whole-grain bread with a side salad.
  • Mid-Afternoon Snack (Optional Pre-Run): A handful of pretzels or a small energy bar if running later.
  • Dinner: Chicken veggie fried rice with brown rice, lean chicken breast, and a variety of colorful vegetables.
  • Post-Run Recovery Snack: A glass of chocolate milk or a fruit smoothie with protein powder.

Hydration: The Often-Overlooked Performance Booster

Dehydration can severely impair performance, causing fatigue, cramps, and dizziness. A solid hydration strategy is non-negotiable for faster running.

  • Daily Hydration: Drink plenty of fluids throughout the day. Pale yellow urine is a good indicator of proper hydration.
  • Pre-Run Hydration: Drink 17-20 ounces of water a few hours before running, and another 8 ounces 20-30 minutes beforehand.
  • During-Run Hydration: For runs over 45 minutes, sip 4-8 ounces of fluid every 15-20 minutes. For long or intense runs, use a sports drink to replenish electrolytes like sodium.
  • Post-Run Hydration: Replenish lost fluids by drinking 16-24 ounces of water for every pound of body weight lost during the run.

Foods to Limit or Avoid Before a Run

While you want to fuel adequately, some foods are best avoided in the hours leading up to a run to prevent digestive issues that can hinder your performance.

  • High-Fiber Foods: While healthy, high-fiber foods like beans, broccoli, and other cruciferous vegetables can cause gas and cramping due to slow digestion.
  • High-Fat Foods: Greasy, fatty foods (fried foods, fatty meats) digest slowly and can make you feel sluggish.
  • Spicy Foods: Can lead to indigestion and heartburn, which is unpleasant during exercise.
  • Excessive Caffeine: While a small amount can boost performance, too much can stimulate the GI tract and cause issues.

Conclusion

Optimizing your diet is a powerful and controllable way to increase running speed and improve overall performance. By prioritizing complex carbohydrates for sustained energy, consuming adequate protein for muscle repair, and focusing on healthy fats, you build a strong nutritional foundation. Strategic meal and snack timing ensures your body is properly fueled for every stage of your run, from preparation to recovery. Combined with a robust hydration plan and mindful food choices, a runner's diet becomes a key training tool, allowing you to run stronger, longer, and faster. For more resources on optimizing your training and nutrition, visit Runner's World for expert advice.

Frequently Asked Questions

For a large meal, eat 2-4 hours before your run. For a smaller snack, aim for 30-60 minutes before you start. The key is to allow enough time for digestion to prevent stomach upset during your run.

A banana is a classic choice due to its high content of easily digestible carbohydrates and potassium, which helps prevent muscle cramps. Pretzels, toast with jam, or a sports gel are also excellent options for quick fuel.

Carbohydrates are the most important macronutrient for running speed. They are the body's primary fuel source, especially during high-intensity efforts, and provide the glycogen needed to maintain pace and energy levels.

Within 30-60 minutes of finishing, consume a snack or meal with a 3:1 ratio of carbohydrates to protein. This helps replenish glycogen stores and repairs muscle fibers. Examples include chocolate milk, a smoothie, or Greek yogurt with fruit.

For runs lasting over 60-90 minutes, yes. Consuming 30-60 grams of carbohydrates per hour helps maintain blood glucose levels and prevents you from 'hitting the wall' due to depleted energy stores.

Proper hydration is crucial. Dehydration, even a small amount, can cause fatigue, dizziness, and decreased performance. Staying hydrated with water and electrolytes helps regulate body temperature and supports muscle function.

Key micronutrients include iron (for oxygen transport), calcium and vitamin D (for bone health), and magnesium and potassium (for muscle function). Deficiencies can negatively impact endurance and speed.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.