- Running to space would require at least 10 hours to cross the Kármán Line and 40 hours to reach the ISS.
- It would be the most extreme ultramarathon ever, far beyond any land race.
- Running teaches that limits can always be pushed a little further, without necessarily aiming for the stars.
Have you ever thought about running all the way to space? No, not in a figurative “I feel light as an astronaut” way. We mean actually running—vertically—mile after mile, straight out of Earth’s atmosphere.
It sounds absurd, but someone did the math to figure out how long it would really take. Spoiler: it wouldn’t be an easy jog.
How long would it take to “run” to space?
Let’s assume you’re an average runner maintaining a pace of 10 km/h and that a magical vertical track exists—ignoring minor inconveniences like gravity and lack of oxygen. The numbers are mind-blowing:
- 48 minutes in – You’d already be at an altitude where the air is too thin to breathe. Less than an hour, and you’d be gasping.
- 1 hour in – You’re at the cruising altitude of airliners. Look left, right, above, and below—mind the traffic.
- 8 hours in – Congratulations, you’ve reached space! NASA defines space as starting at 80 km.
- 10 hours in – You’ve crossed the Kármán Line (100 km), the official boundary between Earth’s atmosphere and space.
- 16 hours in – You’re now at the lowest satellite orbits. Watch out for passing debris.
- 40 hours in – Exhausted? No worries, you’ve arrived at the International Space Station’s altitude. Try knocking—they might offer you a cup of tea.
- 3,500 hours (146 days) in – You’ve made it to geostationary satellites at 35,000 km.
- 4 ½ years in – With an endless supply of energy gels, you might finally reach the Moon.
Of course, all of this ignores minor details like human endurance, oxygen deprivation, and, well, the fact that gravity wouldn’t exactly let you “run” upwards.
Redefining the ultramarathon
At this point, it’s impossible not to compare this wild journey to the toughest ultramarathons on Earth.
Think Badwater 135, a brutal 217 km race through Death Valley’s scorching heat. Now imagine that, but uphill. Forever.
Or consider the infamous Barkley Marathons, a 100-mile trek through an unforgiving wilderness, with no course markings and an almost 99% dropout rate. Tough? Sure. But at least you can breathe.
Running to space, in short, would be the ultimate ultramarathon—no aid stations, no checkpoints, no oxygen, and only one direction: up.
Running lessons from an impossible journey
No one is ever going to run to space (unless someone invents an infinitely long zero-gravity treadmill). But this wild thought experiment still offers valuable lessons about running:
- Endurance is everything
The human body is capable of mind-blowing feats when trained properly. Running for 40 hours straight isn’t for everyone, but improving endurance is key to conquering any challenge—whether it’s a half marathon or an ultra. - Limits exist to be pushed
If someone told you a person could run six days straight without sleep, would you believe it? It’s happened. Your limits are always a little further than you think. - You don’t have to aim for the stars—just find your own “space” in running.
You may never be an ultramarathoner or set world records, but every run is its own little space mission. Maybe your goal is running 5K without stopping or finishing your first marathon. The important thing is to start.
So, while you’ll probably never run all the way to the International Space Station, the next time you lace up and head out, remember: every step is a little further than yesterday. And sometimes, all it takes to feel like you’re in orbit is a perfectly timed runner’s high. 🚀
(Via Unilad Tech)