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.
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. It is traditionally the final event of a track meet. At top class events, 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.
Andrew Rock is an American sprinter who specializes in the 400 meter dash.
Dennis Darling is a Bahamian athlete who specializes in the 400 metres. He is currently track and field Assistant Coach at Texas Christian University.
Monique Hennagan is an American athlete who mainly competes in the 400 metres. She won her first relay medal at the 1999 World Indoor Championships and her second in 2003.
Kevin Borlée is a Belgian sprinter, who specializes in the 400 metres. He is a member of the Borlée family.
Michael Mathieu is a retired Bahamian sprinter from Freeport, Grand Bahama who specialized in the 200 metres and 400 metres. He was part of the Bahamian silver medal-winning team in the men's 4×400 metres relay at the 2008 Beijing Olympics, running second leg and recording a 44.0 split, and the gold medal-winning team at the 2012 Summer Olympics. He was also a part of second place relay team at the 2007 World Championships. He won the bronze medal in the 4x400 metres relay in the 2016 Summer Olympics.
Michael Bingham is an American-born British 400 metres track and field athlete. The silver medalist in the individual 400 metres at the 2010 European Championships, his most notable successes came as a long-time member of the Great Britain and England 4 x 400 metre relay squads. A European indoor, European outdoor and Commonwealth Games champion in the long relay, Bingham won medals at every major indoor and outdoor championships available to him, winning Olympic bronze in 2008, World outdoor silver and World indoor silver (twice), in addition to the gold medals at European and Commonwealth Games level.
Jonathan Borlée is a Belgian sprinter, who specializes in the 400 metres. He is a member of the Borlée family.
Arman "Gino" Hall is an American sprinter specializing in the 400m. He is a World and Olympic gold medalist as a member of USA's 2014 and 2016 4 × 400 m relay teams.
Rondell Bartholomew is a Grenadian track and field sprinter who specialises in the 400 metres. He has represented his country at two World Championships in Athletics and was a 400 m world finalist in 2011. His personal best for the event is 44.65 seconds.
Jeffery Gibson is a Bahamian sprint athlete from Grand Bahama who mainly competes in the 400 metres and 400 metres hurdles. He is the Bahamian national record holder in the latter event with a 49.39 seconds clocking during the semi-finals of the 2013 NCAA Championships. He attended Bishop Michael Eldon School formerly Freeport Anglican High School. He later competed for Oral Roberts University following in the foot steps of compatriot Andretti Bain.
Ashley Spencer is an American track and field athlete who competes in the 400 metres and the 400 metres hurdles. In the 400m hurdles, she is the 2016 Olympic bronze medalist. In the 400m, she is the 2012 World Junior Champion and the 2016 World Indoor silver medalist. She is coached by 1996 Olympic bronze medalist Tonya Buford-Bailey.
Courtney Okolo is an American track and field sprinter who usually competes in the 400 metres. She starred at Carrollton (Texas) Newman Smith High School where she won multiple individual state championships.
Dominique Blake is a Jamaican track and field athlete. Blake won a gold medal at the 2010 Central American and Caribbean Games and was accidentally awarded a bronze medal at the 2012 Summer Olympics. She was banned for 4+1⁄2 years after testing positive for methylhexanamine and returned to athletic competition in 2017.
La'Sean Pickstock is a male sprinter from Nassau, Bahamas, who mainly competed in the 400m. He ran second leg of the 4x400 relay at the 2010 IAAF World Indoor Championships in Athletics in Doha, Qatar and first leg of the 4 × 400 m relay at the 2010 Commonwealth Games that placed fourth in the final. He ran the anchor leg of the 4 x 400m Relay at the NACAC U23 Championships in Athletics where the Bahamas won the silver medal in the final. He attended CR.Walker High School in the Bahamas before joining countryman and Olympic gold medalist Ramon Miller at Dickinson State University where he was an All American. He now works for the Dickinson Police Department in Dickinson, North Dakota.
Rai Benjamin is an American professional hurdler and sprinter specializing in the 400 m and 400 m hurdles. He is the second fastest man in history in the 400 m hurdles with a personal best time of 46.17 s. Benjamin won silver medals at his first Olympic Games in 2021 and at the World Championships in 2019 and 2022 in the men's 400 m hurdles, and gold medals in the 4 × 400 m relay in 2019 and 2021.
Robert Grant is an American-born Italian sprinter, specialized in the 400 metres hurdles and 400 metres.
Elija Godwin is an American athlete who specialises in the 400 metres.
Jamal Moss is a male sprinter from Nassau, Bahamas, who mainly competes in the 400m. Moss competed for Hinds Community College. Moss ran the third leg of the 4 × 400 m Relay at the 2010 Commonwealth Games, as well as the third leg for the same event at the 2004 World Junior Championships in Athletics in Grosseto, Italy.
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