The popularity of long-distance running is increasing worldwide as more people seek challenges and try to push their limits. Ultramarathon running, which is significantly longer than the marathon distance, is a true dream for many athletes, but it is important to recognize that the sport can have serious consequences for the body. During physically demanding competitions, runners constantly expose themselves to fatigue, injuries, and cardiovascular problems. Research shows that ultramarathons are not just about endurance and mental strength, but they can also carry serious risks that may affect the heart muscles. Alongside the enthusiasm for the sport, it is essential to consider the medical and scientific background, as maintaining health…