Heptathlon consisting of the same events as the men's competition in a slightly different order, and the IAAF has begun keeping records for it, but the heptathlon remains the championship-level combined event for women. Nafissatou Thiam, representing Belgium, is the 2016 Olympic Gold Medallist and the 2017 World Champion. There is also a Tetradecathlon, which is a double heptathlon, consisting of 14 events, seven events per day. The heptathlon scoring system was devised by Dr Karl Ulbrich, a Viennese mathematician. The formulae are constructed so that, for each event, a designated "standard" performance (for example, approximately 1.82 m for the high
Combined track and field events (double decathlon) for men and the tetradecathlon for women. Indoors, both men and women compete in the tetradecathlon, with slightly different events to the women's outdoor version. Combined track and field events Combined events are competitions in which athletes participate in a number of track and field events, earning points for their performance in each event, which adds to a total points score. Outdoors, the most common combined events are the men's decathlon and the women's heptathlon. Due to stadium limitations, indoor combined events competition have a reduced number of events, resulting in the men's heptathlon and the women's pentathlon.