Distance running is a form of long-distance athletic competition that typically involves running races longer than 3,000 meters. Common distances include the 5K, 10K, half-marathon (21.1 kilometers), and marathon (42.2 kilometers). This sport emphasizes endurance, stamina, and mental toughness, as runners often train for months to prepare for these challenging events. Training for distance running usually includes a mix of long runs, speed work, and recovery days. Runners often follow specific training plans to build their mileage gradually and improve their performance. Proper nutrition and hydration are also crucial for maintaining energy levels and overall health during training and races.