Jogging Outside Versus The Treadmill

woman running outside

Whether you’re a seasoned jogger who regularly goes out three to five mornings a week for your usual workout, or you’re someone new to running and looking to improve your health and fitness, one question you might be asking is whether you’re better off jogging outside or opting for a treadmill—either at your local gym or at home, if that’s available.

To make an informed decision, it’s essential to understand the pros and cons of each option and weigh them against your specific circumstances.

Let’s take a look at the key factors you should consider so you can make the right choice for you.

The Boredom Factor

The first thing to think about when choosing between running on a treadmill or outdoors is the boredom factor. Are you someone who might find yourself getting bored on the treadmill, grinding away like a hamster on a wheel?
The truth is, most people will eventually fall off a program like this. Initially, your motivation may carry you through the monotony, but after a week or two, the repetition can become unbearable.

The great thing about running outdoors is the variety. You can change up your route, take in new scenery, and keep things fresh.

Often, this simple change of environment is enough to keep people motivated—and ultimately, consistency is the biggest factor in achieving results.

The Sprinting Factor

Next, consider whether your running routine will include sprint training. If you’re planning on high-intensity interval training (HIIT), which is a popular and effective method for fat loss, running outdoors may be the better option.
Why? Because sprint intervals require you to quickly accelerate to your top speed. On a treadmill, ramping up the speed can take eight to ten seconds, which eats into your interval time—especially if you’re only sprinting for 30 seconds.

Outside, you can accelerate instantly, making for a more effective sprint session.

The Injury Factor

Another point to consider is the injury risk involved in each option.
All else being equal, you’re more likely to get injured running outdoors, mainly due to uneven terrain. A small dip or crack in the road can lead to a twisted ankle, which could sideline you for weeks.

Treadmills, on the other hand, provide a consistent, flat surface and often have built-in cushioning. This helps reduce impact on your joints, making it a better option for those with knee or back pain.

Since running is inherently high-impact, the treadmill can be a smart way to minimize joint stress while still getting in your cardio.

Finding the Right Fit for Your Fitness Goals

Lastly, let’s look at the “toughness factor.” Running six miles per hour on a treadmill feels different than running six miles per hour outside—even on flat ground.
Why? Because on a treadmill, especially a motorized one, the moving belt helps propel you forward. Outdoors, it’s all you—your muscles are doing all the work, which usually means you’ll expend more energy and burn more calories per session.

That said, you can replicate outdoor conditions on a treadmill by setting a 1–2% incline, which simulates natural resistance more accurately.

Additionally, if you’re looking to train on inclines, treadmills offer easy adjustability. Finding a steady, long hill outside can be difficult, especially if you want to maintain a consistent effort.

So, when deciding where to run, think about your goals, your preferences, and what’s most sustainable for you. Many runners mix it up—running outside on some days and using the treadmill on others, especially in areas with variable weather.

This hybrid approach can give you the best of both worlds and help you stay consistent, motivated, and progressing toward your fitness goals.

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