Long-distance running is a form of endurance running that typically involves races longer than 5 kilometers. Common distances include the 10K, half marathon (21.1 kilometers), and the full marathon (42.2 kilometers). This sport requires physical stamina, mental resilience, and proper training to build up distance gradually, helping runners avoid injuries. Training for long-distance running often includes a mix of long runs, speed work, and rest days. Runners also focus on nutrition and hydration to maintain energy levels during their runs. Many people participate in long-distance events for fitness, competition, or personal achievement, making it a popular activity worldwide.