Decathlon is a combination event that consists of a number of events.Ten track and field events. It is overtwo days The winner is decided by Combining performances In all events. It is being contested by Male athletes are mainly Female athletes often compete in the Heptathlon. The IAAF approved the women’s decathlon in 2001 and it is now contested in some competitions. Decathlon originated in the pentathlonThis is an ancient Olympics part.long jump, Diskus throw, javelin, Sprint And Wrestling. A championship for all, similar to modern decathlon, was held at 1904.Summer Olympics The modern decathlon was first held at the1912 Games Located in Stockholm. https://sportsmatik.com/sports-corner/sports-know-how/decathlon/