Running is a great form of exercise. It’s low impact, you can do it anywhere, and it doesn’t require a lot of equipment or expertise. But when we draw a comparison, running outside is for sure more effort taking and difficult compared to running on a treadmill.

There are basically 5 reasons why you can run on a treadmill but not outside, and this is what this blog is all about.

5 Reasons Why You Can Run On A Treadmill But Not Outside:

1. The Pace On Treadmill Is Constant

On treadmill you can walk or run at the same speed. In case of outside running, you have to adjust your pace according to the surroundings and environment.

When you run outside, you can slow down and speed up whenever you want, but on treadmill, although it’s in your control to speed up and speed down, but it’s the machine that decides what pace you have to run at, and your brain is tunnel visioned to follow that speed.

2. Treadmill Pushes You To Achieve Targets

Being competitive is in the human nature. When you run on a treadmill all the statistics are right in front of your eyes.

Stats like distance covered, speed of running, time on machine, calories burned, and many other things are right there on the screen. They are a kind of motivation for you to achieve a certain target, and as a result you end up running more on a treadmill compared to running outside.

3. Focus Is Better On A Treadmill

When we run outside somehow the focus is divided. The moment you get a little tired, the brain starts telling you to stop because one of the basic functions of brain is to protect you against anything that it considers unsafe.

On the other hand, when you run on a treadmill, your focus is not divided, and it’s tunnel visioned on achieving the targets of that run. e.g. if you want to run a mile on treadmill, you will definitely run a mile even if you struggle to run a kilometer outside.

4. Atmosphere Is Different

In outdoors, there is a hot or cold, and wind factor that takes more energy to work against.

When you run outside, air moves past you with a resistance factor, and it carries away the heat building up from your exertion. On a treadmill, that air movement is lower and your muscles shut down faster due to excess heat build up.

Test this theory by blowing fan air on you while running on a treadmill, you will see the difference.

5. Treadmill Provides A Flat Surface

You do not need to face any obstacles on a treadmill like roads, curb stones, grassy lawns etc. There is no distraction, just a flat surface and constant pace, that makes it easier for you to run on a treadmill and you end up running more than what you would have done outside.

Some Other Running On A Treadmill And Running Outside Issues And Their Solution:

1. Is It Better To Run Longer Or Faster?

There are benefits to both running longer and running faster. The best option for you depends on your specific goals.

If your goal is to lose weight, running longer is the better option, as it will help you burn more calories. However, if your goal is to improve your cardiovascular health, running faster is the better option, as it will raise your heart rate and help you get fit faster.

2. Is Treadmill Better Than Running Outside?

There are pros and cons to both treadmill running and running outdoors. Treadmill running is typically better for those who are just starting out or are recovering from an injury, since it is a low-impact activity.

Running outdoors can be great for people who are looking to improve their speed and endurance, as the terrain can vary and present different challenges.

Check out our detailed guide on treadmill vs running outside.

3. How Is Running On A Treadmill Different From Outside?

Running on a treadmill is very different from running outside. When you run outside, you have to contend with the terrain, which can be uneven and challenging.

You also have to deal with the wind, which can make running more difficult. When you run on a treadmill, you don’t have to worry about any of that.

The treadmill belt ensures that your stride is always consistent, and the machine regulates the speed and incline so that you can always find the right level of difficulty.


That’s all in why you can run on a treadmill but not outside. There could be many other reasons that could be found out using scientific experiments but for now these are the lot we could find out.

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Categories: Fitness

Bilal Ahmed

A random guy on the Internet enthusiastic about Blogging Chess and Football Life motto "make people's lives easier"