Why Is It Harder To Run Outside Than On A Treadmill? 

Whenever I train for a race, regardless of the season, I somehow end up logging some miles on the treadmill.

I never really plan for it; it just happens, and only sometimes. I know some people can’t stand treadmills (and are perhaps turning their noses up at this second), but when life gets in the way a treadmill can feel like a true godsend.

Inclement temperatures and traveling are the two obstacles I run into the most, and in those situations, I’m more than happy to trot on a tread.

While running inside and outside both have their own benefits and drawbacks, there’s no denying that running outside tends to be more difficult.

Sure, most runners prefer running outside, but they don’t do it because it’s physically easier—depending on the terrain and conditions, it’s usually much harder.

As Elizabeth Corky, elite marathoner, RRCA-certified running coach told mbg, “Weather is definitely a challenge only outdoor runners experience. If you want to run outdoors, you have to learn to work with nature and adapt to it.”

Of course, this is easier said than done. Personally, nothing zaps my motivation more than running in the rain, the cold, or both.

When I’m training, sometimes there’s no avoiding it, but poor conditions make long runs even more difficult, both physically and mentally.

Running on a treadmill means that you can set the pace and the incline, which control the difficulty of the run.

If you’re running with a specific time or pace in mind, it’s much easier to guarantee that result on a treadmill.

If I run six miles on the treadmill and then run six miles in Central Park, well, those are two very different runs.

While yes, you can adjust the incline and speed on the treadmill, there’s no true replacement for the earth under your feet; the treadmill just doesn’t have the same impact on our bodies.

While the physical demands of running outdoors are typically higher, some would argue that the mental taxes of a treadmill make it a tough alternative.

Exercising outside has a plethora of psychological benefits, and in my experience, it’s more enjoyable because it’s less repetitive.

“Treadmills are mentally a thousand times more challenging to handle than running outside,” Corky notes. “It’s also very easy to get into a running rut—hopping on the treadmill and doing the exact same thing all the time.”

As I mentioned before, there’s room for both running inside and outside in any training plan or exercise routine.

They both have their benefits and drawbacks. Most runners (including myself) will say if you’re able to run outside, you should go for it.