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.
Natalya Nikolayevna Antyukh is a Russian sprinter who specializes in the 400 metres and 400 metres hurdles. She won the bronze medal in the 400 metres and a silver for the 4 × 400 m relay at the 2004 Summer Olympics in Athens.
John Bryan Bronson is an American 400-meter hurdler, who won the bronze medal at the 1997 World Championships in Athens. He also represented his country at the 1996 Summer Olympics. He won three consecutive titles at the USA Outdoor Track and Field Championships from 1996 to 1998.
Ana Ambrazienė is a retired hurdler from Lithuania. Also known as Anna Kostecka, she was born in Vilnius and is of Polish descent. She represented the Soviet Union in the 1970s and 1980s.
Zuzana Hejnová is a retired Czech athlete who specialised in the 400 metres hurdles. She won the silver medal in the event at the 2012 London Olympics. Hejnová is a two-time World Champion, having claimed titles at the 2013 and 2015 World Championships in Athletics. She won bronze at the 2012 European Championships and silver for the 400 metres at the 2017 European Indoor Championships.
Eilidh Doyle is a retired British track and field athlete. Originally running as Eilidh Child, she specialised in the 400 metres hurdles outdoors, and the 400 metres flat indoors, as well as the 4 x 400 metres relay on both surfaces. She represented Great Britain at the 2012 Olympic Games in London, and won an Olympic bronze medal in the 4 x 400 metres relay at the 2016 Games in Rio de Janeiro. Individually, she is the 2014 European Champion and a three-time Commonwealth silver medalist in the 400 metres hurdles.
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.
Jack Green is a British sprint athlete who specialises in the 400m distance, along with the hurdles and the 4 × 400 m relay. He competed for the Great Britain team at the 2012 Summer Olympics in London and at the 2016 Summer Olympics in Rio de Janeiro.
The World Athletics Relays, known as the IAAF World Relays until 2019, is an international biennial track and field sporting event held by World Athletics where teams from around the world compete in relay races, some of which are not part of the standard Olympic programme. The first three editions were set to take place in Nassau, Bahamas at the Thomas Robinson Stadium in 2014, 2015 and 2017. Originally intended as an annual event, it was later decided to happen every odd year, the same as the World Athletics Championships for which it serves as a qualification stage.
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.
Janieve Russell is a Jamaican track and field athlete who competes mainly in the 400 metres hurdles and the 400 metres sprint. She won an Olympic bronze medal in the 4 × 400 m relay in Tokyo 2021, where she also finished fourth in the 400m hurdles final in a personal best of 53.08 secs. She is a four-time Commonwealth Games gold medallist, winning the 400m hurdles title in 2018 and 2022, and the 4 × 400 m relay in 2014 and 2018. She has also won two relay silvers at the World Championships and a relay gold at the World Indoor Championships.
Ali Khamis Abbas Ali Khamis is a Bahraini track and field athlete who competes mainly in the 400 metres sprint and 400 metres hurdles. His personal best for the flat event is 44.36 seconds, set in 2013, while his hurdles best is 49.55 seconds, set in 2014. He was the 2014 Asian Games champion in the hurdles and the runner-up in the sprint at the 2013 Asian Athletics Championships
Thomas Barr is an Irish track and field athlete who competes in the sprints and hurdles.
Kendra "Keni" Harrison is an American hurdler. Harrison held the world record in the women's 100 metres hurdles with a time of 12.20 seconds, set on July 22, 2016 at the London Müller Anniversary Games, breaking the previous world record of 12.21 seconds achieved nearly 28 years earlier by Bulgarian athlete Yordanka Donkova.
Omar McLeod is a Jamaican professional hurdler and sprinter competing in the 60 m hurdles and 110 m hurdles. In the latter event, he is the 2016 Olympic champion and 2017 World champion. He was NCAA indoor champion in the 60 m hurdles in 2014 and 2015 and outdoor champion in the 110 m hurdles in 2015; he turned professional after the 2015 collegiate season, forgoing his two remaining years of collegiate eligibility. His personal best in the 110 m hurdles ranks him equal 7th on the world all-time list.
Nicholas Kiplagat Bett was a Kenyan track and field athlete who competed in the 400 metres hurdles. His personal best for the event is 47.79 seconds. He was a world champion in the event, having won in 2015, and a two-time bronze medallist at the African Championships in Athletics. He died in a road accident in Kenya at the age of 28.
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.
Michael Cochrane is a New Zealand hurdler. He competed in the 400 metres hurdles event at the 2015 World Championships in Beijing without qualifying for the final. His personal best in the 400 metres hurdles is 49.58 seconds set in Beijing in 2015. This is the former national record.
Aron Kipchumba Koech is a Kenyan hurdler. At the 2015 Athletics Kenya World Championship Trials he finished third in the 400 metres hurdles event. Later that year he represented Kenya in the 400 metres hurdles event at the 2015 World Championships in Athletics in Beijing, China. With a personal best, in a time of 49.38, he finished 22nd in the heats. He was qualified for the semi-finals where he finished 19th in a time of 49.54. Again in 2016 he finished third at the 2016 Athletics Kenya Olympic Trials behind his brother and Boniface Mucheru Tumuti. At the Olympics, Koech made the final while his brother was disqualified in the heats. Tumuti went on to capture the silver medal in National Record time, while Koech finished seventh. His 48.49 in the semi-final round is his personal record.
Kenneth Selmon is an American track and field athlete who specializes in the 400 metres hurdles. He won the USA Outdoor Championship in 2018 and represented his country at the 2018 Athletics World Cup in London, where he won the 400 metres hurdles.
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