A heptathlon consists of seven events. It is a women's multi-event competition in track and field, which includes 100-meter hurdles, high jump, shot put, 200 meters, long jump, javelin throw, and 800 meters. Athletes compete across these events to achieve the highest total score. The heptathlon tests an individual's versatility, speed, strength, and endurance, making it a challenging but rewarding event in international athletics.