The 400 metres, or 400-meter dash, is a sprint event in track and field competitions. It has been featured in the athletics programme at the Summer Olympics since 1896 for men and since 1964 for women. On a standard outdoor running track, it is one lap around the track. Runners start in staggered positions and race in separate lanes for the entire course. In many countries, athletes previously competed in the 440-yard dash (402.336 m)—which is a quarter of a mile and was referred to as the "quarter-mile"—instead of the 400 m (437.445 yards), though this distance is now obsolete.
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.
The 4 × 400 metres relay or long relay is an athletics track event in which teams consist of four runners who each complete 400 metres or one lap, totaling 1600 meters. It is traditionally the final event of a track meet. The first leg and the first bend of the second leg are run in lanes. Start lines are thus staggered over a greater distance than in an individual 400 metres race; the runners then typically move to the inside of the track. The slightly longer 4 × 440 yards relay, on an Imperial distance, was a formerly run British Commonwealth and American event, until metrication was completed in the 1970s.
Jean Éric Milazar is a Mauritian athlete competing in the 200 metres and 400 metres. He was born in Rodrigues and currently resides in Coromandel, Mauritius. He is married to Natacha Ramen-Milazar since 2006 an ex volleyball player and together they have two kids Ericson and Erica.
LaShawn Merritt is a retired American track and field athlete who competed in sprinting events, specializing in the 400 metres. He is a former Olympic champion over the distance and his personal best of 43.65 seconds makes him the eleventh fastest of all time.
Amantle Montsho is a female sprinter from Botswana who specializes in the 400 metres. She represented her country at the 2004 and 2008 Summer Olympics, reaching the final at the latter edition. She was the first woman to represent Botswana at the Olympics. She has also competed at the World Championships in Athletics and the IAAF World Indoor Championships, and is the former World Champion over the 400m, winning in a personal best time of 49.56 in Daegu.
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 when he won the event at the 2016 Olympics.
Matthew Hudson-Smith is a British track and field sprinter who specialises in the 400 metres and is the 5th fastest athlete of all-time over the distance. As of September 2024 he is ranked as the number one 400m runner in the world and has won six British titles, two individual European titles, an individual Olympic silver medal, World Championships silver and bronze individual medals and an individual Commonwealth silver medal. He has also won a number of relay titles including an Olympic bronze medal, World Championships bronze medal, two European gold medals, one European silver medal, one European bronze medal and a Commonwealth Games gold medal.. Hudson-Smith also holds the European and British 4x400m records (2:55.83) along with the GB Team who ran in the final of the men's 4x400m event in the Paris 2024 Olympics.
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.
Saviour Kombe is a Zambian track and field sprinter who specialises in the 400 metres. His personal best for the distance is 45.27 seconds. He is a joint holder of the Zambian record in the 4×100 metres relay and 4×400 metres relay.
Vernon Larnard Norwood is an American track and field athlete who specializes in the 400 meters.
Emmanuel Kipkurui Korir is a Kenyan middle-distance runner. He is the 2020 Tokyo Olympic and 2022 World champion in the 800 metres. Korir won the silver medal in the event at the 2018 African Championships in Athletics.
Christopher O'Donnell is an Irish track and field athlete competing in sprinting events. He was part of the Irish Mixed 4x400m team who won a gold medal at the 2024 European Athletics Championships. He represented Ireland at the Tokyo 2020 Olympic Games in the Mixed 4 × 400 m relay, where he was part of the first ever Irish team to run in an Olympic final, and competed in the same event at the Paris 2024 Olympic Games. He was also part of the team who reached the final of the 2022 and 2023 World Championships. He is the current Irish U20 record holder in the 400m, his personal best of 45.26 seconds sits joint-2nd on the Irish all-time list and he is a 5-time National 400m champion.
Alexander Doom is a Belgian sprinter specializing in the 400 metres. In 2024, he became the first male athlete to win the individual 400 metres and 4×400 metres relay at the same World Athletics Indoor Championships He has won several medals in international competitions with the Belgian 4 × 400 metres relay team and holds a personal best of 44.15 over the 400 metres.
Elija Godwin is an American athlete who specialises in the 400 metres.
Letsile Tebogo is a sprinter from Botswana. He won the gold medal at the 2024 Summer Olympics in the 200 metres event, with his win earning the first-ever Olympic gold medal for Botswana. He also won the silver medal at the 2023 World Championships in the 100 m and followed it up with a bronze medal in the 200 m five days later.
Busang Collen Kebinatshipi is a track and field athlete from Botswana. In 2023, he became the African U20 champion in the 400 metres.
Victor Ntweng is a track and field athlete. He is national record holder over 400 metres hurdles for Botswana.
Samuel Ogazi is a Nigerian sprinter.
Patrick Kakozi Nyambe is a Zambian sprinter. He ran at the 2024 Summer Olympics as part of the Zambian men's 4 x 400 metres team which reached the final.
