How To Build Running Endurance, According To An Expert Running Coach

Most runners would love to be able to run longer without getting so fatigued that they need to stop. 

Increasing the number of miles or the number of minutes you can run without stopping is a matter of building your endurance or increasing your running stamina.

But, what is the best way to increase your stamina for running? What are the best tips for how to build running endurance for beginners and even experienced runners?

In this article, we will briefly touch upon the factors that contribute to your endurance or stamina running and provide tips and training strategies for how to build running endurance and how to increase running stamina no matter where you are in your running journey.

We will cover the following: 

• What Is Stamina In Running?
• How to Increase Stamina for Running
• How to Build Running Endurance

Let’s dive in! 

What Is Stamina In Running?

Before we can effectively provide training strategies for how to increase stamina for running, let’s look at what running stamina in endurance running is.

Your stamina for running is essentially your running endurance. Running stamina refers to how long you can run at a submaximal effort without getting tired or without needing to stop and walk.

For beginners, running stamina is often the limiting factor to being able to run even a mile without stopping.

You may become breathless, or your legs will be burning and you will be compelled to stop and walk.

Over time, through consistent training, you can build endurance for running so that you can run longer distances without needing to stop and walk.

How to Increase Stamina for Running

There are several components that go into how to build endurance and increase running stamina.

Running is a high-intensity, total-body exercise.

Your stamina for running relies on having both good cardiorespiratory endurance as well as good muscular endurance for running.

When we are trying to improve cardiorespiratory endurance, we need to improve the aerobic capacity of the body, also known as VO2 max.

This means that we have to improve the ability of the body to take in, deliver, extract, and utilize oxygen for energy while running and remove carbon dioxide waste products from the muscles and bloodstream. 

This involves the following functions of the cardiorespiratory system:

Oxygen Intake

Increasing the efficiency and endurance of the lungs to take in enough oxygen without the respiratory muscles such as the diaphragm and intercostal muscles fatiguing. 

This involves strengthening the respiratory muscles and increasing the total volume of the lungs (the amount of air taken in with each breath).

Oxygen Delivery

Then, we also need to increase the strength and efficiency of the heart so that it can pump oxygenated blood efficiently throughout the body. 

This involves strengthening the muscular walls of the ventricles of the heart so that more blood can be pumped for each beat. 

Another key component to increasing oxygen delivery to the muscles is building more blood vessels to carry oxygenated blood to the muscle fibers.

Consistent running or endurance exercise helps build more capillaries, the tiny blood vessels that interface with the muscle fibers to deliver oxygen.

Oxygen Extraction

The more blood vessels you have around the muscles, the more “highways“ or pathways through which oxygenated blood can be readily available to all of the muscle fibers in the muscles used when running. 

So, here again, increasing the number of capillaries through endurance training will help improve oxygen delivery to working muscles.

Oxygen Utilization

Another component in improving running stamina is increasing the efficiency and capacity of muscles to generate ATP (usable energy) through aerobic metabolism. 

This involves increasing the mitochondrial density in the Type I muscle fibers. 

Mitochondria are the small organelles that perform aerobic respiration to create ATP for the muscles.

Waste Removal 

An often overlooked component of building running endurance is improving the efficiency of waste removal during exercise. 

The muscles generate metabolic byproducts such as carbon dioxide. 

Studies show that the relative concentration of carbon dioxide in your bloodstream is a large determiner of your breathing rate: the more carbon dioxide that accumulates, the faster you have to breathe. 

This will make running feel harder because you’ll feel breathless.

When you have more capillaries, the carbon dioxide can be shuttled out of the blood vessels and circulated back to the pulmonary circuit of the heart. 

There, the carbon dioxide is transported into the lungs. As your lungs get stronger, you can exhale carbon dioxide more efficiently.

Muscular Endurance

The other component to address when you are looking into how to build endurance for running is increasing your muscular endurance.

Muscular endurance refers to the ability of muscles to continually contract and produce force without becoming fatigued.

Running uses most of the major muscles in the body, particularly the lower-body muscles such as the quads, glutes, calves, and hamstrings.

Therefore, when you want to incorporate the best strategies for how to increase running stamina, you will want to address both the cardiorespiratory endurance as well as the muscular endurance aspect of distance running.

How to Build Running Endurance

Now that we have discussed the components of building cardiorespiratory endurance for running, let’s look at specific strategies for how to build running endurance to induce these physiological adaptations.

#1: Gradually Increase Distance

In order to build stamina for running, you need to train your body to run longer. The best way to do this is to have one long run per week in the mix of your running workouts.

The goal of the long run will not be to run fast, but rather to run as long or far as possible. In fact, you want to slow your pace and run at an easy intensity for your long run. 

Otherwise, running too fast will not only make it harder to run longer without getting tired, but it will also significantly increase the stress of the long run on your body. This can contribute to developing running injuries or overtraining syndrome.

Gradually increase the duration of a long run in minutes or miles/kilometers.

Aim to increase by no more than 10% from week to week. 

For example, if you can currently run 30 minutes without stopping, increase to 33 minutes the next week. If you can currently run 5 miles without stopping, bump up to 5.5 miles for your next long run.

#2: Do Running Workouts

While it is true that one of the key components for how to build running endurance successfully is to increase the length of your runs with a long run, it is also important to add intervals, tempo runs, and other forms of speed work (fartleks, hill sprints, etc.).

Studies have found that incorporating HIIT (high-intensity interval training) such as fast intervals into your running plan is an effective way to improve aerobic capacity, running endurance, and running economy.

Consider adding one or two different speed workouts to your weekly training plan. For ideas on different types of running workouts, check out our guide here.

#3: Strengthen Your Lungs

The first component discussed for improving cardiorespiratory endurance was improving the strength and efficiency of the breathing muscles and lungs to take in oxygen. Your lungs also play a key role in getting rid of carbon dioxide waste.

You can perform deliberate breathwork exercises to increase lung capacity and respiratory stamina. For example, according to the Cleveland Clinic, diaphragmatic breathing training can increase the amount of oxygen in your blood and enhance the removal of carbon dioxide.

Additionally, you can try a respiratory training device, such as the Airofit PRO 2.0. 

The device provides resistance as you perform specific breathing exercises that are guided through a companion app, so it’s basically like strength training for your breathing muscles. 

#4: Check Your Form

Having an efficient running form will improve your running economy, decreasing the oxygen cost of running at any given speed.

The best option is to get a running gait analysis at a running shoe store. This is usually a free service, and the shoe fit experts can give you pointers on your form.

#5: Start Strength Training

To improve the muscular endurance portion of running stamina, you need to strengthen your muscles.

Strength training 2 to 3 times a week will help your muscles build strength and endurance so that running no longer feels as taxing because your muscles can handle heavier loads.

This will enable you to run longer without feeling like your legs are heavy, burning, or exhausted.

Looking for other ideas for how to build running endurance? Check out our guide to the Norwegian method of running endurance training here.