A mountain runner is an athlete who participates in running events that take place on mountainous terrain. These races can vary in distance and difficulty, often involving steep ascents and descents. Mountain runners need to be physically fit and possess strong endurance, as the challenging landscape requires both strength and agility. Mountain running is a recognized sport, with events held worldwide, including competitions like the World Mountain Running Championships. Runners often train in natural environments to build the necessary skills for navigating trails, rocks, and varying weather conditions. This sport combines the thrill of running with the beauty of nature.