The men's 400 metres hurdles at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 23 to 26. There were 35 competitors from 24 nations. The event was won by Félix Sánchez of the Dominican Republic, the nation's first medal in the men's 400 metres hurdles. Silver went to Danny McFarlane of Jamaica, returning to the podium in the event for the first time since 1992. Naman Keïta's bronze was France's first medal in the event in over 100 years; the last Frenchman to medal in the long hurdles was Henri Tauzin in 1900. The United States' five-Games gold medal streak ended; for only the second time in the history of the event, Americans competed but won no medals.
Kerron Stephon Clement is a Trinidadian-born American track and field athlete who competes in the 400-meter hurdles and 400-meter sprint. He held the indoor world record in the 400-meter sprint, having broken Michael Johnson's mark in 2005.
Louis Jacobus van Zyl, better known as L. J. van Zyl, is a South African athlete competing in the 400 metre hurdles. He is the South African record holder in the event with a personal best of 47.66 seconds, which he achieved twice, three months apart. His time ranks him in the all-time top 25. He is a three-time African Champion in the event and competed for his country at the 2008, 2012 and 2016 Summer Olympics.
The men's 110 metres hurdles at the 2008 Summer Olympics took place on 18–21 August at the Beijing National Stadium. Forty-two athletes from 32 nations competed. The event was won by Dayron Robles of Cuba, the nation's second gold medal in the high hurdles.
David "Dai" Greene is a British hurdler who specialises in the 400 metres hurdles, competing internationally for both Wales and Great Britain. In a 'golden' sixteen-month period between 2010 and 2011, Greene dominated the event at international level, winning the World, European, Diamond League and Commonwealth titles in quick succession, in addition to winning the event as part of both the European Team Championships and the IAAF Continental Cup. Hindered by a knee injury, Greene finished in 4th at the 2012 Summer Olympics, and the same injury prevented him from being competitive at global level thereafter.
The men's 400 metres hurdles at the 2009 World Championships in Athletics was held at the Olympic Stadium on 15, 16 and 18 August.
The men's 400 metres at the 2011 IPC Athletics World Championships is held at the QEII Stadium on 22-23 and 26–29 January
The men's 400 metres hurdles event at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 6, 7 and 9.
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 women's 100 metres hurdles at the 2011 World Championships in Athletics was held at the Daegu Stadium on September 2 and 3.
The Women's 400 metres hurdles event at the 2011 World Championships in Athletics was held at the Daegu Stadium on August 29, 30 and September 1.
The Men's 110 metres hurdles at the 2011 World Championships in Athletics was held at the Daegu Stadium on August 28 and 29.
The Men's 4 × 400 metres relay event at the 2011 World Championships in Athletics was held at the Daegu Stadium on 1 and 2 September. Thursday and Friday. This is a change in schedule from previous years when all the relays were at the end of the program. This might necessitate a change in strategy to allow for team members involved in other events.
Cornel Edwin Fredericks is a South African track and field athlete who competes in the 400 metres hurdles. His personal best for the event is 48.14 seconds.
The men's 400 metres hurdles at the 2013 World Championships in Athletics was held at the Luzhniki Stadium on 12–15 August.
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 was 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 2015 World Championships in Athletics was held at the Beijing National Stadium on 22, 23 and 25 August.
The women's 400 metres hurdles at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 23, 24 and 26 August.
The men's 400 metres hurdles at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha from 27 to 30 September 2019.
The women's 400 metres at the 2022 World Athletics Indoor Championships took place on 18 and 19 March 2022.
