Events are held over two consecutive days and the winners are determined by the combined performance in all.

The International Association for Ultra Multievents (IAUM) is in charge of it and runs the World Championships for it alongside the Icosathlon.

The vast majority of women's tetradecathlons are divided into a two-day competition, with the track and field events held in the order below.

In winter season, the ultra multi-event competitions are declined into indoor tetradecathlon for both men and women.

Outdoor Tetradecathlon Indoor Tetradecathlon This table of records is not officially acknowledged by the World Athletics but is considered by the International Association for Ultra Multievents (IAUM) as the best performance of all time since the foundation of the discipline in 1981.