Runners can prepare for race day or complete a cardio workout by [running](https://www.masterclass.com/articles/proper-running-form) on a treadmill or running outside. While both can provide resistance training and strength training, there are two critical differences between running indoors and outdoors:

1. __Surface__: A treadmill is a piece of gym equipment with a moving belt. Treadmill runners can run at home or inside a gym. Running outside may mean that you’re running on concrete pavement, a running track, or a nature trail. 
2. __Air resistance__: Runners face air resistance when running outdoors, particularly if running against the wind. This resistance is a challenge during tempo runs.There is no air resistance when treadmill running.
Treadmills offer runners the ability to run any time, despite the time of day and weather conditions. Benefits of running on a treadmill include:

- __Temperature control__: Treadmill running indoors will keep you in a temperature-controlled environment, where you won’t have to worry about applying sunscreen or wearing weather-appropriate clothes.
- __Pace maintenance__: Treadmill running allows you to maintain a consistent pace. You can also adjust the difficulty of your run by changing the speed and incline of the moving belt.
- __Joints__: A treadmill will absorb the impact of your feet, placing less stress on your knees and ankles.
- __Safety__: Treadmill runners do not have to worry about running into moving vehicles or exposing themselves to an unsafe environment. 
There are some cons to running on a treadmill, including the cost and limit of muscles worked. Consider the following drawbacks:

- __Equipment__: Running on a treadmill requires you to purchase a treadmill or a gym membership. 
- __Agility__: Running on a treadmill does not require you to turn your body, so you won’t have an opportunity to improve your lateral agility. You cannot run downhill on a treadmill, so you won’t engage your anterior tibialis muscles. The moving belt also propels you forward, which means you use less of your hamstrings.
- __Boredom__: Listening to music or a podcast or watching television on the treadmill can help alleviate boredom, but it can get monotonous if you’re running for more than an hour.
- __Injury__: If you happen to trip or fall when you’re running on a treadmill, the conveyor belt will keep moving, potentially leading to injury. 
Whether you’re toeing the line at a running [track](https://www.masterclass.com/articles/running-drills-guide) or road running, there are numerous benefits to running outdoors:

- __Accessibility__: Running outside is free, and you can do it anytime and anywhere, regardless of gym hours. The only thing you need is a good pair of running shoes.
- __Speed__: On an outdoor run, you can change your running speed immediately.
- __Lateral agility__: You get more muscle activation when you're running outdoors, particularly the glutes and hamstrings, because you're running in various conditions: uphill, downhill, through twists and turns, and over uneven terrain.
- __Motivation__: Running to a specific location, exploring a new area, or trail running can naturally inspire you to run longer distances. Running outdoors can also help you get some fresh air and vitamin D from the sun, helping boost your mood.
There are some cons to running outside, including bad weather, safety concerns, and joint impact:

- __Weather__: Running outside can be unsafe due to exposure to the elements, particularly inclement weather. Rain and snow can affect your stride and stability, and heat and humidity can cause heat exhaustion and dehydration. Wind resistance can also make running outdoors difficult.
- __Safety__: Outdoor runners can slip, fall, or run into moving vehicles. Running outside can be dangerous if it is dark out and there is low visibility. It can also be unsafe if you are alone in an area with few pedestrians. When running outside, exercise caution and have safety measures in place.
- __Joints__: Running on a hard surface can stress your joints, leading to impact or overuse injuries. 
If you have a previous or pre-existing health condition, consult your physician before beginning an exercise program. Proper exercise technique is essential to ensure the safety and effectiveness of an exercise program, but you may need to modify each exercise to attain optimal results based on your individual needs. Always select a weight that allows you to have full control of your body throughout the movement. When performing any exercise, pay close attention to your body, and stop immediately if you note pain or discomfort.

To see continual progress and build body strength, incorporate proper warm-ups, rest, and nutrition into your exercise program. Your results will ultimately be based on your ability to adequately recover from your workouts. Rest for 24 to 48 hours before training the same muscle groups to allow sufficient recovery.
Throw on some athleisure, fire up a [MasterClass Annual Membership](https://www.masterclass.com), and get ready to sweat it out with exclusive instructional videos from Nike Master Trainer and *GQ* fitness specialist Joe Holder. Want to improve your cardiovascular endurance? Give Joe’s HIIT workout a go. Trying to get a little swole? He’s got a strength training workout for that. From fitness tips to nutrition hacks, Joe will have you feeling healthier in no time.
Runners can switch up their routine with both treadmill training and trail runs. Learn about the pros and cons of running on a treadmill and running outside.


Runners can switch up their routine with both treadmill training and trail runs. Learn about the pros and cons of running on a treadmill and running outside.


Treadmill vs. Running Outside: What’s the Difference?

Runners can prepare for race day or complete a cardio workout by <a href='https://www.masterclass.com/articles/proper-running-form' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/proper-running-form","linkCopy":"running","category":null}'>running</a> on a treadmill or running outside. While both can provide resistance training and strength training, there are two critical differences between running indoors and outdoors:<ol class="mc-m-4"><li class="mc-my-4"> 1. Surface: A treadmill is a piece of gym equipment with a moving belt. Treadmill runners can run at home or inside a gym. Running outside may mean that you’re running on concrete pavement, a running track, or a nature trail. </li><li class="mc-my-4"> 2. Air resistance: Runners face air resistance when running outdoors, particularly if running against the wind. This resistance is a challenge during tempo runs.There is no air resistance when treadmill running. </li></ol>

Running on a Treadmill vs. Running Outside: What’s the Difference?

Treadmills offer runners the ability to run any time, despite the time of day and weather conditions. Benefits of running on a treadmill include:<ul class="mc-m-4 list-styled"><li class="">Temperature control: Treadmill running indoors will keep you in a temperature-controlled environment, where you won’t have to worry about applying sunscreen or wearing weather-appropriate clothes. </li><li class="">Pace maintenance: Treadmill running allows you to maintain a consistent pace. You can also adjust the difficulty of your run by changing the speed and incline of the moving belt. </li><li class="">Joints: A treadmill will absorb the impact of your feet, placing less stress on your knees and ankles. </li><li class="">Safety: Treadmill runners do not have to worry about running into moving vehicles or exposing themselves to an unsafe environment. </li></ul>

What Are the Benefits of Running on a Treadmill?

There are some cons to running on a treadmill, including the cost and limit of muscles worked. Consider the following drawbacks:<ul class="mc-m-4 list-styled"><li class="">Equipment: Running on a treadmill requires you to purchase a treadmill or a gym membership. </li><li class="">Agility: Running on a treadmill does not require you to turn your body, so you won’t have an opportunity to improve your lateral agility. You cannot run downhill on a treadmill, so you won’t engage your anterior tibialis muscles. The moving belt also propels you forward, which means you use less of your hamstrings. </li><li class="">Boredom: Listening to music or a podcast or watching television on the treadmill can help alleviate boredom, but it can get monotonous if you’re running for more than an hour. </li><li class="">Injury: If you happen to trip or fall when you’re running on a treadmill, the conveyor belt will keep moving, potentially leading to injury. </li></ul>

What Are the Cons of Running on a Treadmill?

Whether you’re toeing the line at a running <a href='https://www.masterclass.com/articles/running-drills-guide' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/running-drills-guide","linkCopy":"track","category":null}'>track</a> or road running, there are numerous benefits to running outdoors:<ul class="mc-m-4 list-styled"><li class="">Accessibility: Running outside is free, and you can do it anytime and anywhere, regardless of gym hours. The only thing you need is a good pair of running shoes. </li><li class="">Speed: On an outdoor run, you can change your running speed immediately. </li><li class="">Lateral agility: You get more muscle activation when you&#39;re running outdoors, particularly the glutes and hamstrings, because you&#39;re running in various conditions: uphill, downhill, through twists and turns, and over uneven terrain. </li><li class="">Motivation: Running to a specific location, exploring a new area, or trail running can naturally inspire you to run longer distances. Running outdoors can also help you get some fresh air and vitamin D from the sun, helping boost your mood. </li></ul>

What Are the Benefits of Running Outside?

There are some cons to running outside, including bad weather, safety concerns, and joint impact:<ul class="mc-m-4 list-styled"><li class="">Weather: Running outside can be unsafe due to exposure to the elements, particularly inclement weather. Rain and snow can affect your stride and stability, and heat and humidity can cause heat exhaustion and dehydration. Wind resistance can also make running outdoors difficult. </li><li class="">Safety: Outdoor runners can slip, fall, or run into moving vehicles. Running outside can be dangerous if it is dark out and there is low visibility. It can also be unsafe if you are alone in an area with few pedestrians. When running outside, exercise caution and have safety measures in place. </li><li class="">Joints: Running on a hard surface can stress your joints, leading to impact or overuse injuries. </li></ul>

What Are the Cons of Running Outside?

If you have a previous or pre-existing health condition, consult your physician before beginning an exercise program. Proper exercise technique is essential to ensure the safety and effectiveness of an exercise program, but you may need to modify each exercise to attain optimal results based on your individual needs. Always select a weight that allows you to have full control of your body throughout the movement. When performing any exercise, pay close attention to your body, and stop immediately if you note pain or discomfort.To see continual progress and build body strength, incorporate proper warm-ups, rest, and nutrition into your exercise program. Your results will ultimately be based on your ability to adequately recover from your workouts. Rest for 24 to 48 hours before training the same muscle groups to allow sufficient recovery.

How to Work Out Safely and Avoid Injury

Throw on some athleisure, fire up a <a href='https://www.masterclass.com' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com","linkCopy":"MasterClass Annual Membership","category":null}'>MasterClass Annual Membership</a>, and get ready to sweat it out with exclusive instructional videos from Nike Master Trainer and GQ fitness specialist Joe Holder. Want to improve your cardiovascular endurance? Give Joe’s HIIT workout a go. Trying to get a little swole? He’s got a strength training workout for that. From fitness tips to nutrition hacks, Joe will have you feeling healthier in no time.

Want to Dive Deeper Into Your Wellness Journey?

Runners can switch up their routine with both treadmill training and trail runs. Learn about the pros and cons of running on a treadmill and running outside.