Churandy Thomas Martina is a Dutch sprinter. He originally placed second in the 200 metres at the 2008 Beijing Olympics but was later disqualified due to a lane violation. Martina secured four and two individual top-five finishes at the Summer Olympics and World Athletics Championships respectively. He was the 100 metres 2007 Pan American Games champion representing the Netherlands Antilles and claimed three individual titles at the Central American and Caribbean Games. He won gold medals in the 200 m and 100 m at the 2012 and 2016 European Athletics Championships respectively.
Joanne Cuddihy is an Irish sprint athlete, competing for the Kilkenny City Harriers. She was the Irish 400 metres outdoor women's record holder with a time of 50.73 seconds.
Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events. Sarah is one of the most decorated swimmers in the history of swimming.
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.
Kevin Borlée is a Belgian sprinter, who specializes in the 400 metres. He is a member of the Borlée family.
Alfons ("Fons") Brydenbach was a Belgian sprinter who specialized in the 400 metres. He is a former world indoor record holder.
Jonathan Borlée is a Belgian sprinter, who specializes in the 400 metres. He is a member of the Borlée family.
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.
Florent Manaudou is a French competitive swimmer, an Olympic champion of the 50-meter freestyle at the 2012 London Olympics, and the younger brother of Laure Manaudou, a 2004 Olympic gold medalist in swimming. He competes for the Energy Standard Swim Club in the International Swimming League.
Liemarvin Bonevacia is a Dutch sprinter specialising in the 400 metres. He won bronze medals in the event at the 2016 European Athletics Championships, and the 2017 and 2021 European Indoor Championships. Bonevacia earned also five major medals for the 4 × 400 m relays, either men's or mixed, including silver medal in the men's relay at the 2020 Tokyo Olympics.
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.
Lisanne de Witte is a Dutch track and field athlete who competes in sprinting. She specialises in the 400 metres, where she held the Dutch record with her personal best time of 50.77 seconds from 2018 to 2021.
Nadine Visser is a Dutch track and field athlete who competed in the combined events until 2017 and specialises in short hurdling since 2018.
Cynthia Nonyelum Sember is an American-born British track and field athlete, specialising in sprint hurdles. She finished fourth in the 100 metres hurdles final at the 2016 Olympic Games as a 22 year old. but suffered significant injury set backs thereafter which interrupted most of the next Olympic cycle. Her first major international medal, a silver at the 2021 European Athletics Indoor Championships sparked a return to form and fitness that saw her finish fifth at the 2022 World Athletics Championships, and secure bronze for England at the 2022 Commonwealth Games, her first senior outdoor medal. She made the final of the same event at the 2022 European Athletics Championships but a stumble left her in 8th position in her third major final of the year.
Regine Berg is a Belgian former track and field sprinter who specialised in the 400 metres. Born in Ostend, she represented her country at the Summer Olympics in 1976 and 1980. Berg won five national titles over 400 m and also two over 800 metres later in her career. She was a silver medallist at the 1985 IAAF World Indoor Games and participated three times at the European Athletics Indoor Championships.
Lada Vondrová is a Czech track and field athlete who specializes in sprint races. She won several Czech national titles.
Bethany Mae Dobbin is a British sprinter who competes mainly in the 200 metres. She is the Scottish record holder for the 200 metres with a time of 22.50 secs. She represented Great Britain at the Tokyo Olympics in 2021.
The women's 400 metres hurdles event at the 2020 Summer Olympics took place between 31 July and 4 August 2021 at the Japan National Stadium. 39 athletes from 25 nations competed.
Femke Bol is a Dutch track and field athlete who competes in hurdling and sprinting. She specialises in the 400 metres hurdles, where she is the 2023 World Champion, and in the 400 metres, where she is the 2024 World Indoor Champion and the short track world record holder. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team.
Lieke Klaver is a Dutch track and field athlete who competes in sprinting. She specializes in the 200 metres and in the 400 metres. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team.
