The decathlon consists of ten events, which are divided into two days of competition. The events include the 100 meters, long jump, shot put, high jump, and 400 meters on the first day, followed by the 110 meters hurdles, discus throw, pole vault, javelin throw, and 1500 meters on the second day. This grueling combination tests an athlete's versatility and overall athleticism, as competitors need to excel in multiple disciplines to achieve success in this track-and-field event.