Why is long distance running an aerobic sport?

Long distance running is considered an aerobic sport because it primarily relies on the body's aerobic energy system, which utilizes oxygen to convert carbohydrates and fats into energy over extended periods. This energy system is efficient for sustained, lower-intensity activities, allowing athletes to maintain their performance while using oxygen to fuel muscle activity. The emphasis on endurance and prolonged exertion distinguishes it from anaerobic sports, which rely on short bursts of high-intensity effort without significant oxygen use.