Endurance running is a form of long-distance running that focuses on maintaining a steady pace over extended periods. It typically involves races longer than 5 kilometers, with popular distances including the marathon (42.195 kilometers) and the ultramarathon, which exceeds the marathon distance. This type of running emphasizes cardiovascular fitness, muscular endurance, and mental resilience. Training for endurance running often includes a mix of long runs, speed work, and recovery sessions. Runners may also incorporate cross-training activities, such as cycling or swimming, to improve overall fitness and reduce the risk of injury. Proper nutrition and hydration are essential for optimal performance and recovery.