The term "400m" refers to a distance of 400 meters, commonly used in track and field events. It is equivalent to approximately 0.25 miles and is one complete lap around a standard outdoor running track. The 400m race is known for its combination of speed and endurance, requiring athletes to maintain a fast pace throughout the entire distance. In competitive athletics, the 400m is often categorized as a sprint event. Athletes, known as sprinters, typically train to develop both their speed and stamina. The race is a key event in major competitions, including the Olympic Games and the World Athletics Championships.