10 Interesting Facts About Running (You Probably Didn’t Know)

Whether you're a seasoned marathoner, casual jogger, or someone just lacing up for the first time, running connects people around the world in a uniquely powerful way. It’s a sport steeped in history, backed by science, and full of quirky surprises that most of us never stop to think about.

With World Running Day coming up on the 5th of June, we thought it was the perfect time to surprise you with some little-known running facts. From record-breaking feats to mind-blowing physiology, these running facts may even make you want to clock a few extra kilometres…

10 Fun Running Facts

Think you know everything there is to know about running? Think again. Here are ten fascinating facts about running, some rooted in science, some steeped in history, and others just plain wild.

1. Running can boost your brainpower

Aerobic exercise like running doesn’t just strengthen your body, it can also benefit your brain. A study published in the Proceedings of the National Academy of Sciences found that regular aerobic activity increased the size of the hippocampus, the part of the brain linked to memory and learning. In fact, participants saw a 2% growth in hippocampal volume, effectively reversing age-related brain shrinkage. So next time you run, know you’re training your brain as well as your body.

2. Your knees might thank you for running

Contrary to popular belief, running doesn't ruin your knees; in fact, it might protect them. A study in Arthritis Care & Research found that recreational runners had a lower risk of developing knee osteoarthritis compared to non-runners. Researchers noted: “Running at a recreational level is not associated with increased risk of osteoarthritis.”.

3. The first marathon was inspired by a battlefield victory

Marathons trace back to 490 BC, when the Greek soldier, Pheidippides, reportedly ran from Marathon to Athens (about 25 miles) to announce a military victory. He collapsed and died shortly after completing his mission, making today’s finish-line celebrations look pretty tame.

4. Running makes you happier

Yes, the “runner’s high” is real! While endorphins have long been credited for this euphoric sensation, recent research highlights the role of endocannabinoids, which are naturally occurring compounds in the body similar to those found in cannabis. These endocannabinoids, such as anandamide, increase during aerobic exercise and can cross the blood-brain barrier, influencing mood and promoting feelings of well-being. 

In a study carried out by anthropologist David Raichlen, it was found that participants who ran at a moderate intensity for 30 minutes experienced a significant rise in endocannabinoid levels, correlating with enhanced mood and reduced anxiety. So, just half an hour of running can be enough to elevate your mood and provide that sought-after sense of euphoria.

5. The fastest marathon time ever is jaw-dropping

Kenya’s Eliud Kipchoge ran a marathon in 1:59:40 during a special event in 2019, breaking the two-hour barrier (though it wasn’t officially recognised due to controlled conditions). The fastest official marathon time is held by Kenya’s Kevin Kiptum, who ran the Chicago 2023 marathon in 2:00:35! Either way, it's a powerful reminder of human potential.

6. The average running shoe lasts around 300–500 miles

Not just a fun fact, it’s useful to know! Logging your shoe mileage helps prevent injury and keeps your runs feeling fresh. If you’re running regularly, you might need a new pair every 4-6 months.

7. Running can improve your sleep

Struggling to get a good night’s rest? Running might help! Research shows that moderate aerobic exercise can improve sleep quality, help you fall asleep faster, and reduce insomnia symptoms. Just 30 minutes of running a few times a week can make a noticeable difference.

8. Some ultramarathons are over 100 miles long

Think a marathon is tough? Some ultramarathons stretch over 200 miles. Events like the Moab 240 push the limits of physical and mental endurance, proving just how far the human body can go.

9. Running boosts your immune system

Regular running has been shown to strengthen your immune defences, helping your body fight off common illnesses like colds and minor infections. Moderate aerobic exercise can increase the circulation of antibodies and white blood cells, making them more efficient at dealing with pathogens. Just one more reason to keep moving!

10. Runners really do live longer

Research published in the Journal of the American College of Cardiology indicates that runners have a 30% lower risk of death from all causes and a 45% lower risk of cardiovascular-related deaths compared to non-runners. On average, runners live about three years longer than non-runners. So, even a modest running routine can contribute to a longer, healthier life.

Ready to run with realbuzz?

So there you have it, ten fun and fascinating running facts to fuel your passion and maybe even inspire your next run. Whether it’s a historic marathon, a charity 10K, or a personal goal you're chasing, realbuzz is here to help you turn your miles into something more meaningful.

Ready to put these facts into motion? Sign up for one of our exclusive charity races today and join thousands of runners making every step count.

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