An ultramarathon is a long-distance running event that exceeds the standard marathon distance of 26.2 miles (42.2 kilometers). These races can vary in length, often starting at 50 kilometers and going up to 100 miles or more. Ultramarathons can take place on roads, trails, or even in extreme environments, making them a unique challenge for runners. Participants in ultramarathons, often called ultra runners, must prepare both physically and mentally for the grueling demands of the race. Training typically includes long runs, strength workouts, and strategies for hydration and nutrition, as maintaining energy levels is crucial for success in these endurance events.