Nailing her nutrition and also fueling strategy is crucial to harnessing her potential as an athlete, and protein input is a an essential part of the equation. Too frequently carbohydrates take center stage in power nutrition and protein’s important role is overlooked.

Protein contributes to your as whole health and also daily energy management. An ext specifically, protein enhances muscle recovery, increases strength, assists in creating hormones, enzymes, and also neurotransmitters, support the immune system, rises bone strength, assists hemoglobin formation and meets elevated caloric requirements, simply to name a few of the benefits.

You are watching: When calculating the daily protein needs for marathon


How execute you recognize if she getting enough protein?

Pay attention to the following signals from your body the may show you need more protein to support your training:

You battle to recuperate from workouts or construct muscleYou feel slow-moving or experience energy lulls during the dayYou feeling hungry often regardless of eating sufficient calories

Protein Recommendations

According to national Institutes of health (NIH) the Recommended day-to-day Allowance (RDA) because that the typical adult is to consume 0.8 grams (g) the protein per kilogram (kg) or 0.35 grams per lb of body load per job for general health.

However, endurance athletes favor runners require more protein per day to maintain and also build muscle mass. According to the journal of the Academy that Nutrition and Dietetics, runners call for 1.4 to 1.7 grams that protein per kg per day, to fulfill the demands of their training. For example, a 150 lb athlete would need about 90 come 120 grams every day.

Animal-based High Protein Food Sources



Protein content

Cottage Cheese

½ cup

13 g

Greek yogurt

5 oz

11-20 g


8 oz

8 g


1 oz

4-7 g

Beef, chicken, fish

1 oz

7-8 g


1 egg

6 g

Ground turkey

1 oz

7 g

Plant-Based High Protein Food Sources:



Protein content


½ cup

8 g


3 oz

15 g

Spirulina (seaweed)

2 tbsp

8 g


½ cup

9 g


1 oz

4-6 g

Nut butter

2 tbsp



½ cup

8 g


Your body deserve to only absorb roughly 25 to 35 grams in ~ once, therefore loading your plate through excess protein is no going to fast-track restore .

Your size and age identify your protein requirements and also how lot to consume at once. Smaller athletes may need just 15 come 20 grams, while bigger athletes with more muscle massive and greater energy calculation can easily incorporate up to 35 come 40 grams the protein at one meal. If she 55 and over, friend require an ext protein to accomplish the same effect to counteract muscle loss that normally occurs v age.

To maximize recovery and maintain a solid immune system, the timing and also amount of protein girlfriend consume are critical. This is a general guideline.

Begin and end your day v 15 come 20 grams that protein if you space in the middle of a hefty training bike or if your sleep is suffering. Protein helps suppress the negative effect that the resulting hormonal stress and anxiety (cortisol).Include protein in ~ each enjoy the meal according to your size, age and task level (15 to 40 grams relying on size and also age the athlete).Eat protein-rich snacks (10 to 15 grams) to leg the gap between meals that are an ext than 4 to five hours apart. If friend don’t have actually dairy allergies, try some dairy product protein prior to bed favor yogurt or cottage cheese. The casein uncovered in dairy releases slowly and also whey release quickly. The combination helps stabilize blood sugar and repair your muscles as you sleep.

Window the Anabolic Opportunity

Consuming high-quality protein within 30 to 45 minutes of a operation is an important for recovery. Why? Long, intense training sessions break down muscle tissue, adhered to by raised muscle protein synthesis (MPS) over the next 24 hours. Immediately after a run, her body is primed come fast-track protein to fix muscle tissue.

When fuel stores (glycogen) operation low, the body burns protein together fuel through breaking down muscle. Failing to fuel through carbohydrates during an intense workout (or one lasting over 75 minutes) will bring about unnecessary muscle malfunction and defeats the workout"s intention, at some point jeopardizing the athlete"s health and also metabolic system.

Post-workout, aim because that 0.25 to 0.30 grams of high-quality protein/kg, ideally in a liquid form, such together a protein shake, come promote fast digestion. For example, a 150 lb athlete would require 17 to 20 grams that protein post-workout (along with an easy carbs come replenish glycogen stores and fuel muscle synthesis).

Protein Sources

Proteins are comprised of amino acids which duty as a cell"s building blocks. Protein is uncovered in numerous foods favor red meat, fish, poultry, eggs, legumes and dairy products.

Plant Proteins

When acquisition a plant-based restore route, the ideal option is come mix assorted plant proteins because many are considered incomplete on your own. Most plant-based proteins space not finish proteins due to the fact that they lack some that the nine vital amino acids. In compare to animal products, plant-based proteins have actually lower digestibility rates, definition you absorb much less protein every ounce. Notable exceptions room soy, pea and also hemp protein powders, together they contain every one of the important amino acids, despite they room still reduced in leucine content 보다 whey.

As long as consumption is from assorted sources and consumed in greater doses, one athlete"s protein needs deserve to be saturated met through plant proteins.


Dairy Proteins

Whey, thought about the poster son of all protein powders, comes from milk and also makes up 20 percent of milk"s protein.

Unless you have a dairy allergy, whey is basic to digest and also rapidly absorbed. Whey’s global notoriety originates from having the highest amount the leucine, a branch chain amino acid (BCAA) known as the anabolic trigger of muscle repair and growth in an answer to training.

Casein accounts for 80 percent of cow"s milk protein. The is slow to absorb, can be harder come digest and also has a lower leucine content, making that a less effective post-workout an option than whey.

Best Protein Powders because that Runners

As a rule, your resource of protein must be food-based, whether animal or plant. But on the go, the convenience that protein powders renders them basic choice. That"s why numerous athletes depend on protein supplements come ensure lock have enough in their diet.

Powders are basic to prepare, take trip well, can be stored in ~ room temperature for approximately one year and are frequently cheaper gram because that gram. However you don"t desire to sacrifice quality, so understanding the place of the protein flour land is key.

Protein Type

Best For


Whey protein isolate

Dairy-friendly athletes

It’s considered the pure protein flour source, include 90 percent protein and nearly no lactose or fat.

Whey protein concentrate

Dairy-friendly athletes ~ above a budget

It consists of 70 to 80 percent protein, some lactose (milk sugar) and also fat

Whey hydrolysate

Athletes v sensitive stomachs

This whey is pre-digested, so that breaks down quickly. The can likewise be pricey and has a bitter flavor.

Casein protein

Overnight muscle repair

Casein protein can bridge the gap in between extended meals yet is harder to digest.

Soy protein

Vegans and also vegetarians

Soy is wonderful source that high-quality tree protein

Pea and also Hemp Protein

Vegans, vegetarians and those who stop whey or soy

Pea and also hemp are complete plant protein

Most protein powders contain 20 come 25 grams the protein every scoop. Keep in mind an ext is not better.

How execute you know if protein flour is safe?

Protein powders are thought about a supplement, not a food, and as a result, they are not evaluated and approved by the FDA. Basically, girlfriend can"t be details what or how much is in each scoop. Follow to an examination by the Clean brand Project, a significant number of assets contain elevated level of contaminants such together pesticides, heavy metals, BPA and also arsenic. All an excellent reasons why food must be the first line the defense once seeking protein and also nutrients.

If you room going to use protein powder, be sure to uncover a high-quality protein flour that has gone v third-party testing. Look for:

Be a diligent label reader, specifically the ingredient list. If you watch the ax "proprietary blend or formula," this means the manufacturer will certainly not disclose the quantity of each ingredient. This need to raise a red flag. Look at for short ingredient lists and also familiar ingredients.

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