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.
Ian Weakly AKA Ian Weakley is a retired male hurdler from Jamaica. Weakly's best performance came in 2003 with a time of 48.55 in the 400 meter hurdles, ran in Trikala, Greece.
Kerron Stewart is a retired Jamaican sprinter who specialized in the 100 metres and 200 metres. She is the 2008 Jamaican national champion in the 100 m clocking 10.80s. She defeated World Champion Veronica Campbell-Brown in the process and now is the 2008 Summer Olympics silver medalist after she tied with Sherone Simpson in a time of 10.98s. She also earned a bronze medal in the 200 metres at the 2008 Summer Olympics with a time of 22.00s. She was born in Kingston and retired after the 2018 season.
Kirani James is a Grenadian professional sprinter who specializes in the 200 and 400 metres. He won the 400 m at the World Championships in 2011, and the 2012 London Olympics. In the 400 metres, James also won the silver medal at the 2016 Rio Olympics, and bronze medal at the 2020 Tokyo Olympics, thus becoming the first man to earn the full set of three medals in the centennial history of the event. He is Grenada's first and only Olympic medalist.
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.
Shaunae Miller-Uibo is a Bahamian track and field sprinter who competes in the 200 and 400 metres. She is a two-time Olympic champion after winning the women's 400 metres at the 2016 Rio Olympics and again at the 2020 Tokyo Olympics.
Dalilah Muhammad is an American track and field athlete who specializes in the 400 meters hurdles. She is the 2016 Rio Olympics champion and 2020 Tokyo Olympics silver medalist, becoming at the latter the then-second-fastest woman of all time in the event with her personal best of 51.58 seconds. Muhammad was second at both the 2013 and 2017 World Championships to take her first gold in 2019, setting the former world record of 52.16 s. She was the second female 400 m hurdler in history, after Sally Gunnell, to have won the Olympic, World titles and broken the world record. At both the 2019 World Championships and Tokyo Games, she also took gold as part of women's 4 × 400 metres relay team.
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.
Akela Jones is a Barbadian track and field athlete who holds Barbadian records in the women's heptathlon, pentathlon, long jump and high jump. She won gold in the long jump at the 2014 World Junior Championships. In 2015, she was NCAA champion in the heptathlon and won bronze in the high jump at the Pan American Games.
Michael Arthur Norman Jr. is an American sprinter. He holds the world best time in the indoor 400 meters at 44.52 seconds. Outdoors, his 43.45, set at the 2019 Mt. SAC Relays is tied as the #4 on the all time list. In 2016, he became the world junior champion in both the 200 meters and 4×100 meter relay. In 2022, he became the world champion in both the 400 meters and 4x400 meter relay.
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.
Anderson Peters is a Grenadian javelin thrower and the 2019 and 2022 world champion in the event. He is a multiple time CARIFTA Games champion at the discipline and in 2016 earned a bronze medal at the 2016 IAAF World U20 Championships in Bydgoszcz, Poland, setting a new Grenadian national record and OECS record at the same time.
Meleni Rodney, OLY is a Grenadian sprinter who specialises in the 400 metres.
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.
Briana Nichole Williams is an American-born sprinter competing for Jamaica in the 100 metres and 200 metres. She became the youngest athlete to win the women's 100 metres and 200 metres double at the 2018 World Under-20 Championships in Tampere at age 16.
Halle Michelle Hazzard is a Grenadian sprinter and sister of Grenadian sprinter Payton Hazzard. She made her competitive debut for Grenada at the 2017 CARIFTA Games, where she earned a Silver medal and as well as a Bronze Medal in the 200m and 100m respectively. She then went to Grenada to compete in the 3rd OECS Track And Field Championships. At this meet she was able to secure two Bronze medals. One in the Women 100 Meter Dash OECS with a time of 11.76 seconds and another as part of Grenada's 4 × 100 m relay team which included Chelsea Mitchell, Jonair Thomas and Amanda Crawford. On 14 February Halle broke the Grenadian 60m at the Tiger Paw Invite. She surpassed her UVA record-setting run of 7.31 from the week prior three times during the meet. She ran a time of 7.27 during the prelims before dropping the time in the semifinals with a 7.24 run. She closed the day with a time of 7.30 in the finals to finish fifth in the event. Her time ranks second in the ACC and 13th in the NCAA. Hazzard also captured a career-best time in the 200m dash. Her time of 23.79 ranks second in school history. She further lowered that time to 23.45 seconds in the prelims of the 2021 ACC Indoor Championships and moved to the #1 all time in the event for her school. She was also named as a Qualifier for the 2021 Indoor Championships in the 60m
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