Konstantinos "Kostas" Kenteris, also spelled as Konstadinos "Costas" Kederis is a Greek former athlete. He won gold medals in the 200 metres at the 2000 Summer Olympics, the 2001 World Championships in Athletics and the 2002 European Championships in Athletics, making him the only European sprinter to win the gold medal in all three major competitions and the only European World Champion in the 200 metres races. Additionally, he has won two gold, three silver and two bronze medals in the European Cup, as well as three gold medals in the 200 metres at the Athens Grand Prix Tsiklitiria. He is also a 14-time golden medalist at the Greek Athletics Championships and a five-time golden medalist at the Greek Indoor Athletics Championships. He withdrew from the 2004 Summer Olympics, held in his home country, after a doping violation.
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.
Roger Anthony BlackMBE is an English former athlete who competed internationally for Great Britain and England. During his athletics career, he won individual silver medals in the 400 metres sprint at both the Olympic Games and World Championships, two individual gold medals at the European Championships, and 4 × 400 metres relay gold medals at both the World and European Championships.
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.
Harry Lee "Butch" Reynolds Jr. is an American former track and field athlete who competed in the 400 meter dash. He held the world record for the event for 11 years 9 days with his personal best time of 43.29 seconds set in 1988. That year, he was the silver medalist at the 1988 Seoul Olympics and a relay gold medalist.
Sanjay Claude Ayre is a retired Jamaican sprinter who specialized in the 400 meters. Ayre won a silver medal at the 2000 Summer Olympic Games. Ayre is a 2004 IAAF World Indoor Championship Gold medalist and a three-time World Outdoor Championship medalist.
Bertland "Bert" Cameron is a retired Jamaican sprinter who mainly competed over 400 metres. He represented Jamaica at three consecutive editions of the Summer Olympics. Cameron won the 400 m title at the first World Championships in Athletics. He was also the 1982 Commonwealth Games champion in the event and won a number of gold medals at regional competitions. He helped the Jamaican runners to a silver medal in the 4×400 metres relay at the 1988 Seoul Olympics.
David Gillick is an Irish international track and field athlete. He began his education in Our Lady's Boys School and attended St Benildus College secondary school in Kilmacud. He studied at Dublin Institute of Technology before moving to Loughborough University in the United Kingdom to train as a full-time athlete with coach Nick Dakin. Gillick specialises in the 400 metres and he won the European Indoor Championship in 2005 and 2007, as well as the Irish National Outdoor Championship in 2006 and 2007. He set the Irish Indoor record of 45.52 seconds in the 2007 final. The time also beat the Irish outdoor record of 45.58 and was within the Olympic 'A' qualifying standard for the 2008 Games. On 4 July 2009 he ran 44.77 seconds in a race in Madrid to set a new national record. He is also the 2009 Irish national 200 m champion.
Richard Thomas Buck is a former British sprinter who specialised in the 400 metres event. He is from York, and trains in Loughborough. Buck's current club is City of York A.C.. Previously, he had an 18-month spell at Scarborough A.C. He has been trained by his grandfather, Geoff Barraclough, and is now coached by Nick Dakin.
Willie James Smith III was an American athlete who was the national champion 400 metres runner in 1979-80, and a gold medal winner at the 1984 Olympics in the 4 × 400 m relay.
Christian Taylor is an American track and field athlete who competes in the triple jump and has a personal record of 18.21 m, which ranks 2nd on the all-time list.
Jacques Borlée is a former Belgian athlete, and the father and coach of athletes Olivia Borlée, Kevin, Jonathan and Dylan Borlée. He was voted European Athletics Coach of the Year in 2011.
Luguelín Miguel Santos Aquino is a Dominican sprinter, who specialises in the 400 m. He was the silver medallist in the event at the 2012 London Olympics at the age of eighteen. His personal best is 44.11 seconds.
Mehdi Zamani is an Iranian track and field sprinter who specialises in the 400 metres, who was banned for two years for doping.
Wayde van Niekerk is a South African track and field sprinter who competes in the 200 and 400 metres. In the 400 metres, he is the current world and Olympic record holder, having set the record in the Olympic finals.
Dylan Borlée is a Belgian sprinter who competes in the 400 metres. He is a member of the Borlée family.
Mohammad Hossein Abareghi is a male Iranian sprinter. He failed a doping test for the steroid stanozolol, and was banned from the sport for four years, beginning in August 2015.
Inaldo Justino de Sena is a Brazilian former male track and field sprinter who specialised in the 400 metres. He represented his country at the World Championships in Athletics in 1995 and took a bronze medal at the 1994 IAAF World Cup. He won two gold and four silver medals at the Ibero-American Championships in Athletics during his career.
Suziann Reid is an American-Jamaican former track and field sprinter who specialized in the 400-meter dash. She set a personal record of 50.74 seconds for the distance in 1999. She was a silver medalist with the American women's 4 × 400-meter relay team at the 1999 World Championships in Athletics. She was part of the World Championship team twice more, in 2001 and 2005, and helped the United States to silver at the 2002 IAAF World Cup and gold at the 2001 Goodwill Games.
Charlie Dobson is a British sprinter, who won a silver medal in the 400 metres at the 2024 European Athletics Championships, and won the 400 metres event at the 2024 British Athletics Championships. He was also part of the British team that won the 4 × 400 m relay at the 2022 European Athletics Championships.
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