Have you ever wondered what it would be like to lace up your running shoes and go for a jog on other planets? Probably not and while it might sound like science fiction, thinking about running on a different planet is a interesting way to understand the effects of gravity, atmosphere, and terrain on running.
In this article, we’ll take you on a journey across the solar system, exploring how running on planets like Mars, Jupiter, and even Pluto (dwarf planet) would be like.
Later on in this post, there is a table showing what different 5k times on each planet would be like!
How Planets Affect Running
When we talk about running on different planets, the first thing to consider is gravity. Gravity is the force that pulls you toward the ground, and it’s what gives you your weight. Earth’s gravity is what we’re used to, but every planet has a different gravitational pull. This means your body would feel lighter or heavier depending on which planet you’re on.
But gravity isn’t the only factor. The atmosphere, surface conditions, and temperature on other planets also play a huge role in how easy—or impossible—it would be to run.
So, if you actually tried to run a 5k on other planets:
- On low-gravity planets, you’d probably move in slow, bounding leaps, making your time much slower than on Earth.
- On high-gravity planets, you’d struggle to lift your feet, drastically slowing you down or making running nearly impossible.
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1st Planet: Running on Mercury
Mercury is the closest planet to the Sun and has a gravity about 38% that of Earth. If you weigh 150 pounds on Earth, you’d weigh just 57 pounds on Mercury. That means you could leap higher and run with less effort. You might you would be faster, but it will take much longer to land on your feet after taking a step, making you slower (assuming your stride length does not change drastically).
However, Mercury has no real atmosphere to speak of, and temperatures swing from scorching hot to freezing cold. Running here would be tough without a space suit, but otherwise (according to NASA) “there are large areas of smooth terrain, there are also cliffs, some hundreds of miles long and soaring up to a mile high.” In other words, you need to able to scale tall hills/mountains which may be easier due to lower gravity but interesting to think about nonetheless.
2nd Planet: Running on Venus
Venus is similar in size to Earth, but its surface conditions are extreme. The gravity is about 90% of Earth’s, so you’d feel almost as heavy as you do now. The real problem is the atmosphere: it’s thick, toxic, and the surface temperature is hot enough to melt lead. The pressure is so intense it would crush you without a special suit.
So, while running on Venus is technically possible in terms of gravity, the harsh environment makes it a no-go for outdoor exercise. But, for fun, we will assume that you can survive the harsh conditions and run normally. The surface of Venus has many volcanoes, rolling plains, and deformed mountains. As a result, you would again need scaling techniques (like on mercury but you would way need more leg strength due to higher gravity) or avoid those higher areas to be able to run on Venus.
4th Planet: Running on Mars
Mars is one of the most talked-about planets when it comes to future human exploration and maybe in a few hundred years, running here could become a possibility! Its gravity is about 38% of Earth’s, just like Mercury, which means you’d feel light and could take longer strides. Mars also has a thin atmosphere, so you’d need a suit and probably a oxygen tank to breathe and stay warm.
The surface is dusty and rocky, which could make running tricky, but it is mostly flat so you would not need to worry much about hills. However, as you may already know, Mars is home to Olympus Mons, which is the tallest mountain in the solar system. The mountain is about 22 kilometers (13.6 miles) high and the horizontal distance from the base to the peak is about 37 miles, so running to the top of Olympus Mons would be a very tough endurance challenge for sure!
5th Planet: Running on Jupiter
As we move onto the gas giants of the solar system, running becomes nearly impossible as there is no solid surface to stand on. Jupiter is the largest planet in the solar system, but it’s a gas giant with no solid surface. If you tried to “run” on Jupiter, you’d just sink into its thick atmosphere of hydrogen and helium until you reach a rocky core (but the pressure here would be like being in the Mariana Trench and a person would be instantly crushed).
The gravity at Jupiter’s cloud tops is about 2.5 times stronger than Earth’s, so if you could stand on a solid surface there or let’s assume you could stand on gas with the help of lightweight boots, you would still feel extremely heavy. Running (or even taking a single step while walking!) would be almost impossible, and you would tire out very quickly no matter how much experience you have.
6th Planet: Running on Saturn
Saturn, like Jupiter, is a gas giant with no solid ground to run on. Its gravity is a bit stronger than Earth’s, but not as intense as Jupiter’s. However, without a surface, running on Saturn isn’t possible and even if you could find a floating platform in the upper atmosphere, you’d still have to deal with strong winds and freezing temperatures.
You might think you could try running on Saturn’s rings, but the rings are not exactly a line. The many rings are made of smaller particles and move very quickly so it would be more of a jumping rather than a running situation, but you also need to worry about collisions with high speed rocks.
7th and 8th Planets: Running on Uranus and Neptune
Uranus and Neptune are gas and ice giants, and like Jupiter and Saturn, they don’t have a solid surface. The gravity on Uranus is about 89% of Earth’s, and Neptune’s is about 110%. If you could run in their atmospheres with our lightweight boots, then you would still need to worry about the cold, ice storms, and lack of oxygen.
There is no exact terrain to describe either as Uranus and Neptune are mostly composed of just dense gas and many clouds.
Dwarf: Running on Pluto
Pluto may not officially be a planet anymore, but it’s still an interesting place to imagine running. Pluto’s gravity is just 6% of Earth’s, so you’d feel almost weightless. You could take giant leaps, almost like flying. Unlike the gas giants, Pluto has a solid surface, but it is still extremely cold, and its surface is covered in ice and rock. You’d need a heated suit and special boots to avoid slipping or freezing.
Below is a picture of what Pluto’s surface may look like (Imagine running there!).
How Running Would Feel on Different Planets
Let’s break down how running would feel on each planet:
- Lower Gravity (Mercury, Mars, Pluto): You’d feel lighter, take longer strides, and jump higher. Running would be less tiring, but you’d have to adjust your balance.
- Higher Gravity (Jupiter, Neptune): You’d feel much heavier, making running harder and more exhausting. Your muscles and joints would work overtime.
- Similar Gravity (Venus, Uranus): Running would feel almost like it does on Earth, but the extreme atmospheres would make it dangerous or impossible without protection.
- No Surface (Gas and Ice Giants): No place to run unless you build a special platform or use the imaginary lightweight boots.
The Role of Atmosphere
Atmosphere is another key factor when considering running on planets. Earth’s atmosphere provides oxygen and pressure, making breathing easy. On most other planets, you’d need a space suit to provide oxygen and protect you from the elements. This would add weight and bulk, making running more challenging.
Race in Space
As I stated earlier, below I have provided a table with relative 5k times (assuming a 5k pace of 20 minutes) if you ran on different planets and the moon (assuming same cadence and stride length as your legs would not change):
| Planet/Moon | Gravity Ratio (to Earth) | 5k Time (minutes) |
|---|---|---|
| Mercury | 0.37 | 54.1 |
| Venus | 0.90 | 22.2 |
| Earth | 1.00 | 20.0 |
| Moon | 0.17 | 117.6 |
| Mars | 0.38 | 52.6 |
| Jupiter | 2.65 | 7.5 (if you do not slow down or get tired, but realistically you may not even be able to move properly) |
| Saturn | 1.13 | 17.7 |
| Uranus | 1.09 | 18.3 |
| Neptune | 1.43 | 14.0 (if you do not slow down) |
| Pluto | 0.04 | 500.0 (You would be flying with each step and it takes a while to get back to the ground!) |
What We Can Learn from Running on Planets
Thinking about running on different planets helps us appreciate the unique conditions of Earth. Our planet’s gravity, atmosphere, and temperature are just right for outdoor exercise. It also inspires scientists and engineers to design better space suits and equipment for future explorers of different planets.
Conclusion
Running on different planets is a fun way to explore the science of gravity, atmosphere, and human performance. While we may not be jogging on Mars or Pluto anytime soon, imagining these possibilities helps us understand our own planet better and prepares us for the future of space exploration. Who knows? Someday we might just be able to run on some of these planets for recreation!