70% nutrition, 30% exercise： A Simple Nutrition Guide for Runners

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Want to run longer and feel stronger? Running alone isn't enough. Nutrition is just as important to a sustainable running routine, affecting your energy, recovery, and ability to stay consistent over time.

The good news is that most everyday runners don't need a complicated diet. Just remember a few basic principles: eat a variety of foods, match your nutrition to your activity level, and give your body the fuel it needs for training.

1. The Three Macronutrients Every Runner Should Know

Runners need water, vitamins, minerals, fiber, carbohydrates, protein, and fat.

Among them, three macronutrients deserve special attention:

Carbohydrates, protein, and fat.

Carbohydrates: An Important Source of Running Fuel

Carbohydrates are an important source of energy during exercise.

For your everyday diet, prioritize nutrient-rich sources such as:

• Whole grains
• Fruits
• Vegetables
• Beans and legumes

These foods provide carbohydrates along with fiber, vitamins, and minerals.

Fast-digesting carbohydrates, such as energy gels, are generally more useful during longer or higher-intensity workouts when you need to replenish energy quickly. They aren't necessary for every short, easy run.

Bananas are another convenient option. They provide carbohydrates and potassium, making them a simple pre- or post-run snack.

Protein: Support Post-Run Recovery

Running places a certain amount of stress on your body, and protein helps support the repair and maintenance of body tissues.

Good sources of protein include:

• Eggs
• Chicken
• Lean beef
• Fish
• Yogurt
• Soy and other legumes

You don't need to intentionally load up on protein at every meal. Consistent and balanced intake matters more.

Fat: Don't Cut It Out Completely

Dietary fat plays an important role in normal body function. Instead of avoiding it completely, choose nutrient-rich sources such as:

• Salmon
• Avocado
• Nuts
• Seeds
• Olive oil

For runners, the goal isn't to eliminate fat, but to choose quality sources and maintain balance.

Image Source & Copyright Notice

This image is sourced from the book Are You Really Going to Run? That’s Great! and is used for informational and reference purposes only. The copyright of the original image belongs to the book’s author and the respective copyright holders.

2. Your Training Volume Changes What You Need to Focus On

Not every runner needs the same approach to nutrition. How much you run, how hard you train, and what you're training for can all affect your energy and nutritional needs.

For Everyday Runners: Get the Basics Right

If you run a few times a week and most of your workouts are short, easy runs, you don't need to eat like a professional athlete.

Instead of calculating every nutrient, focus on a few basics:

• Eat a variety of foods: Include whole grains, vegetables, fruits, protein, and healthy fats.
• Don't skip carbs: They provide energy for everyday exercise.
• Get regular protein: It supports recovery and helps maintain your body.
• Stay hydrated: Especially before and after exercise.
• Don't overly restrict your food intake: Running requires energy.

For most everyday runners, consistency and balance matter more than precise calculations.

Image Source & Copyright Notice

This image is sourced from the book Are You Really Going to Run? That’s Great! and is used for informational and reference purposes only. The copyright of the original image belongs to the book’s author and the respective copyright holders.

For Higher-Volume Runners: Make Sure You Fuel Enough

If you start increasing your weekly mileage, adding longer runs, or training for a half marathon or marathon, things can be different.

The longer and harder you train, the more energy your body uses. At this point, it's not just about eating healthy—you also need to ask:

Are you eating enough to support your training?

Pay particular attention to carbohydrates and overall energy intake. During longer workouts, appropriate carbohydrate intake can help support performance. After training, carbohydrates, protein, and fluids can all contribute to recovery.

So higher-volume runners don't necessarily need a “stricter” diet. They need to make sure their nutrition keeps up with their training.

Run less? Focus on building healthy eating habits. Run more? Pay closer attention to fueling and recovery.

Image Source & Copyright Notice

This image is sourced from the book Are You Really Going to Run? That’s Great! and is used for informational and reference purposes only. The copyright of the original image belongs to the book’s author and the respective copyright holders.

3. What Should You Eat Before and After Running?

You don't need a complicated nutrition plan for every workout.

Before a Run

Whether you need to eat before running depends on how long ago you last ate, how long you plan to run, the workout intensity, and how hungry you feel.

If you're doing a short, low-intensity run, you may not need an extra snack.

If you're hungry before running, choose a light source of carbohydrates, such as:

• Banana
• Oatmeal
• Whole-grain bread
• Fruit

Avoid eating a very heavy meal or something unfamiliar right before a run.

After a Run

After exercise, focus on:

Fluids + Carbohydrates + Protein

A normal, balanced meal is usually enough. For example, you could have rice with eggs and vegetables, or yogurt with fruit and oats.

There's no need to drastically restrict your food after running.

The goal is to support recovery and prepare your body for your next workout.

4. Don't Just Track What You Eat—Know How Much You Run

When talking about nutrition, many people focus only on what they ate that day and overlook another important factor:

How much did you actually exercise?

In addition to your diet, consider:

• How many times do you run each week?
• How long is each workout?
• Has your training volume changed recently?
• Was today's workout an easy run or a high-intensity session?

Tracking your workouts can help you better understand your activity patterns.

With PitPat, you can track your running and workout data, making it easier to see your exercise frequency, workout duration, and training changes over time.

For runners who want a more guided approach, the DeerRun A1 Pro AI Fitness Coach takes this a step further. Its AI Coach system works with AI Watch and PitPat to help you monitor heart rate, recovery, workout intensity, and progress over time.

You don't need to turn every workout into a complicated data analysis.

Simply:

Understand your activity level first, then make your nutrition work with it.

Remember Three Principles—Balance, Variety, and Moderation

You don't need a special "runner's diet" to support your everyday running.

Remember three principles:

Balance — Get a reasonable amount of carbohydrates, protein, and healthy fats.

Variety — Choose a range of different foods to get a wider variety of nutrients.

Moderation — No single food needs to be treated as a miracle food, and you don't need to completely eliminate ordinary foods from your diet.

Whether you're running outdoors or training at home with DeerRun, find a routine that fits your lifestyle and that you can maintain over the long term.