The 400 metres hurdles is a track and field event that combines sprinting and hurdling. Athletes race around a 400-metre track while jumping over ten hurdles, each set at a height of 91.4 cm for men and 76.2 cm for women. The race requires speed, agility, and precise timing to clear the hurdles efficiently. Competitors start from a staggered position to ensure a fair race, as the track curves. The event is typically run in a single lap, and the fastest athlete to cross the finish line after clearing all hurdles wins. It is a popular event in major competitions like the Olympics and World Championships.