Fell running

Fell running is running that happens on really steep hills and mountains that have tall grass, dirt, rocks and sometimes mud. Basically, it's a type of running where you go up and down hills very fast and it can be quite challenging.

People who do fell running often use special shoes that help them climb up and down the hills safely, as well as special clothes that protect them from the weather. They also carry important things like water, snacks, and first-aid kits, just in case they get tired or hurt.

Fell running can be really fun and exciting, but it's also important to be careful and stay safe. Races are also held where people compete with each other to see who can finish the course the fastest.

In a nutshell, fell running is like running on really big and steep hills, and it's both challenging and adventurous.