The 400-meter run is a standard track and field event that involves running a single lap around a standard outdoor track. It is classified as a sprint race, requiring athletes to maintain a fast pace while managing their energy over the entire distance. Competitors in the 400-meter run must possess a combination of speed, strength, and endurance. Runners typically start from a staggered position to ensure a fair race, as the track curves. The event is popular in competitions such as the Olympics and World Championships, showcasing the athleticism of sprinters.