The women's 400 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 15, 16 and 18 August. The world-leader prior to the competition, Sanya Richards, was regarded as the favourite in the event, although her previous failure to convert circuit dominance to major championship success raised some doubts. Reigning Olympic and world champion Christine Ohuruogu entered the championships as only the 25th fastest in the world that year, although a low-key run up also preceded her previous victories. Jamaicans Shericka Williams and Novlene Williams-Mills were predicted as possible medallists, while Russian Antonina Krivoshapka held the second fastest time in the world prior to the tournament.
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 800 metres event at the 2016 Summer Olympics took place between 12–15 August at the Olympic Stadium. Fifty-eight athletes from 39 nations competed. The event was won by David Rudisha of Kenya, the fourth man to successfully defend Olympic gold in the 800 metres. Taoufik Makhloufi of Algeria took silver, the first medal for the nation in the 800 metres since 2000. The United States had an even longer medal-less streak broken, as Clayton Murphy's bronze was their first since 1992.
The women's 200 metres at the 2015 World Championships in Athletics is scheduled to be held at the Beijing National Stadium on 26, 27 and 28 August.
Rhasidat Adeleke is an Irish sprinter. She won the 100 metres / 200 m double at the 2021 European Athletics Under-20 Championships.
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 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 women's 4 × 400 metres relay event at the 2020 Summer Olympics took place on 5 and 7 August 2021 at the Japan National Stadium. There were 16 competing relay teams, with each team having at least 5 members from which 4 were selected in each round.
The mixed 4 × 400 metres relay event at the 2020 Summer Olympics took place on 30 and 31 July 2021 at the Japan National Stadium. There were 16 competing relay teams, with each team having 4 members. It was the first mixed-gender relay in athletics held at the Olympic Games, as part of a larger focus on gender equality by the International Olympic Committee.
The women's 200 metres at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, from 30 September to 2 October 2019.
Lieke Klaver is a Dutch track and field athlete who competes in sprinting. She specializes in the 200 metres and in the 400 metres. In the 4 × 400 metres relay, she is the 2023 World Champion with the Dutch women's team.
The women's 400 metres event at the 2021 European Athletics Indoor Championships was held on 5 March 2021 at 11:22 (heats) and at 19:33 (semi-finals), and on 6 March 2021 at 20:25 (final) local time.
The women's 400 metres at the 2022 World Athletics Indoor Championships took place on 18 and 19 March 2022.
The women's 4 × 400 metres relay at the 2022 World Athletics Indoor Championships took place on 20 March 2022.
The men's 200 metres at the 2022 World Athletics Championships was held at the Hayward Field in Eugene from 18 to 21 July 2022.
The women's 400 metres at the 2022 World Athletics Championships was held at the Hayward Field in Eugene, Oregon, U.S. from 17 to 22 July 2022.
The women's 200 metres at the 2023 World Athletics Championships was held at the National Athletics Centre in Budapest from 23 to 25 August 2022.
The women's 800 metres at the 2023 World Athletics Championships was held at the National Athletics Centre in Budapest from 23 to 27 August 2023.
The women's 100 metres hurdles at the 2023 World Athletics Championships was held at the National Athletics Centre in Budapest from 22 to 24 August 2023.
The women's 400 metres hurdles at the 2023 World Athletics Championships was held at the National Athletics Centre in Budapest, Hungary from 21 to 24 August 2023. The final was won by the Dutchwoman Femke Bol in a time of 51.70 s, ahead the American Shamier Little in second place and the Jamaican Rushell Clayton in third place.
The women's 4 × 400 metres relay was a two-round track event of the 2023 World Athletics Championships held at the National Athletics Centre in Budapest. Seventeen national relay teams participated in the two heats that took place on 26 August 2023. Nine teams qualified for the final, the last track race of the championships, on 27 August 2023. The final was won by the Dutch team consisting of Eveline Saalberg, Lieke Klaver, Cathelijn Peeters, and Femke Bol in 3:20.72 minutes, which was a world-leading time and a national record. In second place finished the Jamaican team with Candice McLeod, Janieve Russell, Nickisha Pryce, and Stacey-Ann Williams in 3:20.88 minutes and third was Great Britain and Northern Ireland with Laviai Nielsen, Amber Anning, Ama Pipi, and Nicole Yeargin in 3:21.04 minutes.
