What should a runner eat in a day?

This question is about Nutrition and Running

Elle Penner, MPH, RD

Wondering what a runner should eat in a day? Whether you’re a sprinter or a long-distance runner, all runners should eat a wide variety of minimally processed, whole foods every day, with a special focus on complex carbohydrates, lean protein, healthy fats, iron, and electrolyte-rich foods.

Complex carbohydrates: Complex carbohydrates, like those found in whole grains, potatoes, brown rice, beans, lentils, fruit, vegetables, and pasta, are an excellent source of energy for runners. These carbs are particularly good for replenishing muscle glycogen before and after a run. Because the body has limited carbohydrate stores, runners can benefit from incorporating complex carbohydrates in all meals and snacks. If your digestive tract is easily excited by fiber, you may want to hold off on those high-fiber foods until after your run. 

Lean protein: Runners need protein to build and repair muscle tissue after training. Good sources include fish, chicken, turkey, eggs, Greek yogurt, beans, peas, lentils, quinoa, and tofu. For optimal post-run recovery, aim to consume a mix of complex carbohydrates and lean protein within 60 minutes of finishing a run. 

Healthy fats: Quality fats (such as polyunsaturated and omega-3 fats found in fatty fish, avocados, nuts, and seeds) can support hormonal health and reduce inflammation, both of which are important for runners. Omega-3 fats in particular can have big benefits for runners as they reduce inflammation early in the inflammatory cascade and have been shown to be beneficial for muscle recovery post-exercise, heart health, liver function, metabolic health, and more [







Iron: Iron is incredibly important for runners as it is a key component of hemoglobin, a protein in red blood cells that transports oxygen to your working muscles when you run. Deficiency, with or without anemia, can impair muscle function and limit work capacity [


]. Good sources of iron include lean red meat (limited to 1-2 times/week), muscles, oysters, sardines, beans, tofu, enriched grains and cereals, and dried apricots. 

Electrolytes: Electrolytes (like sodium, potassium, calcium, magnesium, and chloride) are electrically-charged minerals that are critical for muscle and nerve function and help regulate fluid balance. Calcium is one such electrolyte that is especially important for runners as it’s required for the growth, maintenance, and repair of bone tissue. Since the body’s electrolyte needs increase with high-impact exercise like running, it’s recommended to include certain nutrient-rich foods in your diet. Fresh fruits and veggies and coconut water are natural sources of electrolytes, whole milk, yogurt, cheese, and some types of tofu are good sources of calcium.

How much of these foods and the individual nutrients you need will vary from person to person. If you’re looking to optimize your nutrition for running, read our

complete guide for

improving your running performance

an assortment of produce and pantry items displayed on a table


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