800 rounds

The 800 metres at the Summer Olympics has been contested since the first edition of the multi-sport event. The men's 800 m has been present on the Olympic athletics programme since 1896. The women's event was first held in 1928, making it the first distance running event for women. However it was not held again until 1960, since when it has been a permanent fixture. It is the most prestigious 800 m race at elite level. The competition format typically has three rounds: a qualifying round, semi-final stage, and a final between eight runners.
The Olympic records are held by David Rudisha, who ran a world record of 1:40.91 minutes in 2012, and Nadiya Olizarenko, who ran a former world record of 1:53.43 minutes in 1980. Olizarenko's mark is the joint longest-standing women's Olympic record (technically set three days after Ilona Slupianek's shot put record) and the joint second-longest after the men's long jump record by Bob Beamon. Her time remains the second fastest ever for the event. The 800 metres world record has been broken or tied ten times at the Olympics; the men's record was broken in 1912, 1932, 1968, 1976 and 2012; the women's record was bettered in 1928, 1960, 1964, 1976 and 1980.Four men have won back-to-back 800 m Olympic titles: Douglas Lowe (1924/1928), Mal Whitfield (1948/1952), Peter Snell (1960/1964), and Rudisha (2012/2016). No women have won multiple titles in the event; Maria Mutola and Kelly Holmes are the only women's gold medalists to have reached the podium on two occasions. No athlete of either sex has won more than two medals. Historically, athletes in this event have also had success in the 1500 metres at the Olympics. Holmes was the last athlete to win both events at the same Olympics in 2004. 2012 1500m gold medalist Taoufik Makhloufi made both podiums without winning gold in 2016. Alberto Juantorena in 1976 also won the 400 metres gold medal in the same Olympics, only three other men and one woman have been able to medal in both events.The United States is the most successful nation, having nine gold medals and 24 medals in total. The next most successful nations are Great Britain (eight gold and 12 medals overall) and Kenya (5 golds among its 13 medals).

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