Blog Fitness Running 3 Miles: Calories Burned, Weight Loss Success And Everything Else You Need To Know

Running 3 Miles: Calories Burned, Weight Loss Success And Everything Else You Need To Know

If you’re looking for a great way to burn calories, build muscle, and lose weight, running 3 miles is an excellent starting point for a few reasons. Not only does it provide an accessible and effective form of cardiovascular exercise, but it also fosters physical endurance and mental resilience. The act of consistently pushing your body over these distances can lead to significant caloric burn, aiding in weight loss and overall health improvement. Furthermore, running 3 miles regularly can help tone muscles, particularly in your lower body, and enhance your metabolic rate even when you’re not exercising. But the benefits go beyond the physical. The discipline and commitment required to maintain this routine can also foster a positive mindset and a sense of accomplishment. In this guide, we’ll get into the specifics of how many calories you can expect to burn while running 3 miles, how this can contribute to weight loss success, and other key considerations you need to be aware of as you embark on this fitness journey.

Is A 3-Mile Run Good For Weight Loss?

Running 3 miles regularly can be an excellent strategy for weight loss, for several reasons.

First of all, it’s a vigorous activity that can help you burn a significant number of calories – about 300 to 400 calories per run, depending on your weight and pace (3). This contributes to creating a calorie deficit, which is essential for weight loss.

Second, running in conjunction with resistance training can help to build lean muscle mass. The more muscle you have, the higher your resting metabolic rate, meaning you’ll burn more calories even when you’re not exercising.

Finally, running can have indirect effects on weight loss too. It can improve your mood and reduce stress levels, which might help curb emotional eating (5). Plus, the discipline required to stick to a running routine can translate into better self-control in other areas, including diet.

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However, everyone’s body responds differently to exercise, and weight loss isn’t only about exercise – diet plays a crucial role too. So, while running 3 miles can certainly support weight loss, it’s most effective when combined with a healthy, balanced diet and other lifestyle changes.

How Many Calories Is A 3 Mile Run?

It’s generally estimated that running burns about 100 calories per mile for a 160-pound person. This suggests that a 3-mile run would burn approximately 300 calories for a person of this weight.

That said, the number of calories burned during a 3-mile run can vary greatly and depends on several factors:


The more you weigh, the more calories you will burn as it takes more energy to move your body. For example, a person who weighs 160 pounds might burn approximately 300-375 calories running 3 miles, while someone who weighs 200 pounds might burn around 375-470 calories.

Speed And Intensity

The faster you run, the more calories you burn in a shorter amount of time. However, even if you run slower but for a longer duration, you could burn the same amount of total calories.


Running uphill or on uneven terrain can increase the intensity of your run, helping you burn more calories compared to running on a flat surface.

Running Efficiency

If you’re new to running, your body is likely less efficient (meaning you use more energy) than someone who’s been running regularly. As your body becomes more accustomed to running, you may burn fewer calories over the same distance.

Read More: Running 2 Miles: Calories Burn While You Have Fun!


Everyone’s body metabolizes energy differently. Some people may naturally burn more or fewer calories at rest and during activity.

Age And Sex

Older adults may have a slower metabolic rate and burn fewer calories during physical activity. Men typically have more muscle mass and a higher metabolic rate, so they may burn more calories than women. However, this is only a general statement and individuals will vary greatly due to an array of factors.

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Running 3 Miles: Calories Burned

What Else Can A 3-Mile Run Do?

While calories burned and weight loss are certainly important factors to consider, running 3 miles can bring a range of other benefits too.

Improve Cardiovascular Health And Fitness

Running regularly can increase your heart’s strength and efficiency. When you run, your heart pumps more blood with each beat, which can promote a stronger and more efficient system, meaning it doesn’t have to work as hard at rest. This can also help lower your resting heart rate, a key indicator of cardiovascular health.

Running may also help increase your levels of high-density lipoprotein (HDL), known as ‘good cholesterol’, while decreasing levels of low-density lipoprotein (LDL), or ‘bad cholesterol’. This balance is beneficial for preventing heart disease (6).

Lastly, regular running can stimulate the growth of new blood vessels. This process, known as angiogenesis, improves blood flow and oxygen supply throughout your body, further enhancing your cardiovascular system (1).

Even a moderate routine like a daily 3-mile run can significantly improve your heart health, making it a very compelling reason to lace up your running shoes.

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Better Lung Capacity and Respiratory Health

The second benefit of running 3 miles regularly is the enhancement of lung capacity.

When you run, your muscles require more oxygen to produce energy, which in turn makes your breathing rate increase. Over time, as you continue to run regularly, your body adapts by improving the efficiency and capacity of your lungs.

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This enhanced lung capacity allows you to take in more oxygen with each breath, which can be used to fuel your muscles more effectively not only when you’re exercising, but also in daily activities. This increase in lung capacity also improves the exchange of carbon dioxide, a waste product of metabolism, from your muscles to your lungs where it can be exhaled (2).

In addition, running can strengthen your diaphragm and intercostal muscles – the muscles between your ribs, which both play a crucial role in the process of inhalation and exhalation (2).

Stronger diaphragm and intercostal muscles can make your breathing more efficient, further enhancing your lung capacity.

That said, a regular 3-mile run can significantly improve your respiratory health and overall performance, making every breath you take more effective (2).

Improved Endurance And Stamina

The third benefit of a regular 3-mile run is the increase in endurance and stamina (7).

Endurance refers to your body’s ability to sustain prolonged periods of physical activity, while stamina is the measure of your body’s ability to maintain consistent effort levels over time. Both are important for overall physical fitness and daily activities.

When you run regularly, your body adapts to the increased demand for energy by improving the efficiency of your cardiovascular and respiratory systems, as we discussed earlier. This allows more oxygen and nutrients to be delivered to your working muscles, enabling them to work harder for longer.

Simultaneously, running stimulates your muscles to increase their storage of glycogen, a form of carbohydrate that is quickly converted into energy. With more glycogen stored, your muscles have a ready supply of fuel for longer runs.

Your body also becomes more efficient at removing waste products such as lactic acid, which can cause fatigue and discomfort during exercise. As your tolerance for these waste products improves, so does your ability to maintain a steady running pace for longer periods.

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Over time, these physiological adaptations result in improved endurance and stamina, allowing you to run longer distances without tiring, recover faster between runs, and perform better in other physical activities.

Running 3 Miles: Calories Burned

Read More: Running 1 Mile Calories Burned And How To Maximize Results

Building Muscle And Strength

Running is a weight-bearing exercise, which means it works against gravity. This not only strengthens your muscles but can also improve bone health (7).

The repeated impact of your feet against the ground stimulates muscle growth and adaptation in response to the stress being placed on them.

In running, the primary muscles at work are your quadriceps and hamstrings in your thighs, the gluteus maximus in your buttocks, and the gastrocnemius and soleus in your calves. These muscles contract and relax in a sequence that propels you forward.

Over time, regular running can make these muscles stronger and more efficient.

Additionally, running also engages your core muscles – including the abdominals and lower back – which help to stabilize your body and maintain good posture during your run. Thus, running can contribute and support overall core strength.

But the benefits aren’t limited to the lower body and core. Your upper body muscles, like your arms and shoulders, also get a workout as they counterbalance the motion of your legs. This can lead to overall body strength improvements.

Stress Management And A Better Mood

Running, like other forms of physical activity, is a natural and effective way to manage stress and anxiety. It does this in several ways.

First, running stimulates the production of endorphins, sometimes referred to as “feel-good” hormones. These are neurotransmitters in the brain that act as natural painkillers and mood elevators (4). The release of endorphins during and after a run can create a sense of euphoria often referred to as the “runner’s high.”

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Second, running provides a distraction from stressful thoughts. It allows you to shift your focus from your worries to your body’s movement and breathing. This mindfulness aspect can help break the cycle of negative thoughts that often accompany stress.

Third, running can improve sleep, which is often negatively affected by stress. Better sleep can improve your mood and energy levels, making you better equipped to handle stress (4).

Finally, regular running can increase self-confidence as you achieve your running goals, whether it’s increasing your distance or improving your time. This sense of accomplishment can help reduce feelings of stress.

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Increased Bone Strength And Joint Health

Running is a weight-bearing exercise, which means it puts stress on your bones and joints. This stress, when applied regularly and properly, can actually strengthen your bones and joints, increasing their density and reducing the risk of osteoporosis and other degenerative diseases (8).

Additionally, running can improve the flexibility and strength of the ligaments that support your joints, reducing the risk of injuries 

Improved Sleep Quality

Regular physical activity like running can help regulate your sleep patterns. Exercise increases the amount of time you spend in the deep, restorative stages of sleep, helping you wake up feeling more refreshed (4).

Furthermore, running can help reduce insomnia by decreasing arousal, anxiety, and depressive symptoms.


  • Does Running 3 Miles Burn Fat?

Yes, running 3 miles can help burn fat. Running is a high-intensity exercise that burns a significant amount of calories, which can lead to fat loss when combined with a balanced diet.

  • Does Walking 3 Miles Burn The Same Calories As Running 3 Miles?

No, walking 3 miles does not burn the same number of calories as running 3 miles. Running is a more intense activity and typically burns more calories than walking over the same distance.

  • Is Running 3 Miles A Good Workout?

Yes, running 3 miles is a good workout. It provides cardiovascular exercise, strengthens muscles, improves lung capacity, and can help with weight management.


The Bottom Line

Running 3 miles a day offers numerous health benefits, including calorie burning, potential weight loss, increased cardiovascular health, and more. Whether you’re a seasoned runner or a beginner, understanding the impacts of this exercise can help you reach your fitness goals more effectively.


This article is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional advice or help and should not be relied on to make decisions of any kind. Any action you take upon the information presented in this article is strictly at your own risk and responsibility!


  1. A Review on Angiogenesis and Its Assays (2012, 
  2. Association of physical activity with lung function in lung-healthy German adults: results from the KORA FF4 study (2017, 
  3. Calories burned in 30 minutes for people of three different weights (2021, 
  4. Exercise and stress: Get moving to manage stress (2022, 
  5. Greater Weight Loss from Running than Walking during 6.2-yr Prospective Follow-up (2014, 
  6. Leisure-Time Running Reduces All-Cause and Cardiovascular Mortality Risk (2014, 
  7. Running and jogging – health benefits (n.d., 
  8. The effect of long-distance running on bone strength and bone biochemical markers (2019,
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