An ultra marathon is a long-distance running event that exceeds the standard marathon distance of 26.2 miles (42.195 kilometers). These races can vary in length, with common distances including 50 kilometers, 100 kilometers, and even 100 miles or more. Ultra marathons can take place on roads, trails, or a combination of both, and they often challenge runners with diverse terrains and conditions. Participants in ultra marathons must prepare extensively, as these events require not only physical endurance but also mental resilience. Runners often face unique challenges such as navigating difficult trails, managing hydration and nutrition, and coping with fatigue over extended periods.