Skyrunning is like running on the sky, but not really. It's actually a type of sport where people compete in high-altitude mountain races. It's a bit like playing tag but instead of running around the playground, people run up mountains and hills!
In Skyrunning, people run on really steep and rocky terrain up in the mountains. They have to be very careful because the ground can be really unstable and hard to run on. Some of the races go above 2,000 meters, which is super high up in the air!
People who do skyrunning are super fit and they have to be really strong because running up hills takes a lot of energy. They have to wear special shoes with really good grip so that they don't slip when they're running up the mountains. They also have to bring things like water and food with them because some of the races can take hours and hours to complete.
Skyrunning is a bit of a scary sport, you have to be really brave to do it. But it's also really exciting because you get to see amazing views from high up in the mountains. Plus, when you finish the race, you get to feel super proud of yourself for doing something really challenging!