The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.
The first world record in the men's 400 metres hurdles was recognised by the International Association of Athletics Federations in 1912. That inaugural record was the performance by Charles Bacon at the 1908 Olympics.
The men's 400 metres hurdles competition at the 2012 Summer Olympics in London, United Kingdom took place on 3–6 August at the Olympic Stadium. There were 49 competitors from 33 nations. The event was won by Félix Sánchez of the Dominican Republic, the second victory in the men's long hurdles for both the man and the nation. Sánchez was the eighth man to win multiple medals in the event and fourth to win two golds. Michael Tinsley of the United States earned silver. Javier Culson's bronze was Puerto Rico's first medal in the event.
The men's 110 metres hurdles competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 7–8 August. Fifty-three athletes from 33 nations competed. The event was won by Aries Merritt of the United States, the nation's first championship in the event since 1996 and 19th overall. Hansle Parchment's bronze was Jamaica's first medal in the men's high hurdles.
Karsten Warholm is a Norwegian sprinter who competes in the 400 metres and 400 m hurdles. He is the 2020 Tokyo Olympic champion, a three-time world champion and the world record holder in the latter event.
The 400 metres hurdles at the Summer Olympics is the longest hurdling event held at the multi-sport event. The men's 400 m hurdles has been present on the Olympic athletics programme since 1900, with a sole gap at the 1912 Summer Olympics. The women's event was added to the programme over eighty years later, at the 1984 Olympics. It is the most prestigious 400 m hurdles race at elite level.
The men's 400 metres event at the 2016 Summer Olympics took place between 12 and 14 August at the Olympic Stadium. Fifty-three athletes from 35 nations competed. The event was won by 0.73 seconds by Wayde van Niekerk of South Africa, who broke the world record in the 400m and won the nation's second gold medal in the men's 400 metres. Kirani James of Grenada and LaShawn Merritt of the United States became the sixth and seventh men to win two medals in the event, but Michael Johnson remained the only man with two gold medals.
The men's 400 metres hurdles event at the 2016 Summer Olympics took place between 15–18 August at the Olympic Stadium. There were 47 competitors from 33 nations. The event was won by Kerron Clement of the United States, the nation's 19th victory in the men's long hurdles. Clement became the ninth man to win multiple medals in the event. Both Kenya and Turkey earned their first medals in the men's 400 metres hurdles, the former with Boniface Mucheru Tumuti's silver and the latter with Yasmani Copello's bronze.
The men's 400 metres hurdles at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 6–9 August.
The men's 100 metres event at the 2020 Summer Olympics took place on 31 July and 1 August 2021 at the Olympic Stadium. 84 athletes were expected to compete; 27 nations used universality places to enter athletes in addition to the 56 qualifying through standard time or ranking. 78 athletes from 59 nations competed. Marcell Jacobs won the gold medal, establishing twice, semifinal and final, the new European record, Italy's first medal in the men's 100 metres. The United States extended its podium streak in the event to six Games with Fred Kerley's silver, only third at the U.S. Trials. Canadian Andre De Grasse won his second consecutive bronze medal in the 100 metres establishing his personal best. With Usain Bolt retired, Jamaica's three-Games gold medal streak ended.
The men's 200 metres event at the 2020 Summer Olympics took place on 3 and 4 August 2021 at the Olympic Stadium. 48 athletes from 33 nations competed, including five universality places. Canada earned its first gold medal in the event since 1928 and third overall, as Andre De Grasse added gold to his 2016 silver to become the 12th man to earn multiple medals in the 200 metres. Kenneth Bednarek and Noah Lyles, both of the United States, took silver and bronze as Americans reached the podium for the first time since 2008. Jamaica's three-Games gold medal streak in the event ended, with Usain Bolt having retired.
The men's 400 metres event at the 2020 Summer Olympics took place between 1 and 5 August 2021 at the Olympic Stadium. Approximately fifty athletes were expected to compete; the exact number was dependent on how many nations use universality places to enter athletes in addition to the 48 qualifying through time or ranking. 48 athletes from 33 nations competed. The event was won by 0.23 seconds by Steven Gardiner of the Bahamas, with Anthony Zambrano of Colombia taking silver. Those were the first medals in the men's 400 metres for each of those two nations. Kirani James of Grenada won his third consecutive medal in the event with his bronze, making him the first man to earn three medals in the 400 metres.
The women's 400 metres event at the 2020 Summer Olympics took place from 3 to 6 August 2021 at the Japan National Stadium. 45 athletes from 34 nations competed. Shaunae Miller-Uibo won the gold medal by 0.84 seconds in a personal best of 48.36 secs, a time which ranks her sixth on the world all-time list. In successfully defending her title, Miller-Uibo joined Marie-Jose Perec as the only women to win two Olympic 400 metres titles.
The men's 110 metres hurdles event at the 2020 Summer Olympics took place between 3 and 5 August 2021 at the Olympic Stadium. Approximately forty athletes were expected to compete; the exact number was dependent on how many nations used universality places to enter athletes in addition to the 40 qualifying through time or ranking. 40 athletes from 29 nations competed. Hansle Parchment of Jamaica won the gold medal, the nation's second consecutive victory in the event. His countryman Ronald Levy took bronze. American Grant Holloway earned silver, placing the United States back on the podium in the event after the nation missed the medals for the first time in Rio 2016.
The women's 100 metres hurdles event at the 2020 Summer Olympics took place between 31 July and 2 August 2021 at the Japan National Stadium. 40 athletes from 28 nations competed. In the semifinals, Jasmine Camacho-Quinn of Puerto Rico broke the Olympic record, running 12.26 secs, to go equal fourth on the world all-time list. The following day in the final, she won the gold medal with a time of 12.37 secs. American world record holder Keni Harrison finished second to clinch silver and the bronze to Jamaica's Megan Tapper.
The women's 400 metres hurdles event at the 2020 Summer Olympics took place between 31 July and 4 August 2021 at the Japan National Stadium. 39 athletes from 25 nations competed.
Alison Brendom Alves dos Santos is a Brazilian athlete specialising in the 400 metres hurdles. He is a bronze medalist at the 2020 Olympic Games, the 2022 World Champion and the third fastest athlete in the history of the event, in addition to being a gold medalist in the 2019 Pan American Games. Dos Santos is currently the South American and Pan American record holder in the competition.
The 2019 Bislett Games was the 54th edition of the annual outdoor track and field meeting in Oslo, Norway. Held on 13 June at Bislett Stadium, it was the fifth leg of the 2019 IAAF Diamond League – the highest level international track and field circuit. 29 events were contested with 13 of them being point-scoring Diamond League disciplines.
The men's 400 metres hurdles at the 2022 World Athletics Championships was held at the Hayward Field in Eugene from 16 to 19 July 2022.
The men's 400 metres hurdles at the 2023 World Athletics Championships was held at the National Athletics Centre in Budapest, Hungary from 20 to 23 August 2023.
