Merlene Joyce Ottey is a Jamaican-Slovenian former track and field sprinter. She began her career representing Jamaica in 1978, and continued to do so for 24 years, before representing Slovenia from 2002 to 2012. She is ranked fourth on the all-time list over 60 metres (indoor), eighth on the all-time list over 100 metres and sixth on the all-time list over 200 metres. She is the current world indoor record holder for 200 metres with 21.87 seconds, set in 1993. She was named Jamaican Sportswoman of the Year 13 times between 1979 and 1995.
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.
Pilavullakandi Thekkeparambil Usha is a retired Indian track and field athlete. She was born in Koothali near Perambra in Kozhikode district, Kerala. She grew up in Payyoli. She has been associated with Indian athletics since 1979. She has won 4 Asian gold medals and 7 silver medals. She is often associated as the "Queen of Indian track and field". On 6 July 2022, she was nominated to the Rajya Sabha by former President Ram Nath Kovind. In December 2022, Usha was elected president of the Indian Olympic Association unopposed. In December 2022, she was appointed to the panel of Rajya Sabha vice chairman to control the proceedings of the upper house during the absence of both Chairman and Deputy Chairman. She is the first nominated MP in history to become the Vice Chairperson of the Rajya Sabha.
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.
Natasha Monique Hastings is an American 400 meter track and field sprinter.
Elīna Ringa is the first official female pole-vaulter in Latvia and also the first Latvian female national record holder in this event. She won the Latvian National Championship competition outdoors and indoors more than ten times.
Equatorial Guinea competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation at London marked its eighth appearance in the Summer Olympics since its début at the 1984 Summer Olympics. The delegation included two track and field athletes, Benjamín Enzema and Bibiana Olama who both qualified for the Games via wildcard places because their fastest times did not meet the required qualification standards. Olama was selected as the flag bearer for both the opening and closing ceremonies. Both athletes did not advance beyond the first round of their respective events.
Dominica participated in the 2012 Summer Olympics in London from 27 July to 12 August 2012. The country's participation in London marked its fifth appearance in the Summer Olympics since its debut in the 1996 Summer Olympics. The delegation included two athletes: Erison Hurtault and Luan Gabriel, the former qualified for the Games by meeting qualification standards while the latter entered the quadrennial event through a wildcard place. Hurtault was selected as the flag bearer for the opening ceremony while Gabriel carried the flag at the closing ceremony. Neither athlete progressed farther than the first round of their respective events.
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.
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.
Oluwakemi "Kemi" Adekoya is a Nigerian-born track and field athlete who competes for Bahrain. She specialises in the 400 metres hurdles and has a personal best of 53.39 seconds – a Bahraini and Asian record. In January 2019, it was reported that Adekoya tested positive for an illegal steroid stanozolol in an out-of-competition test in November 2018 and was provisionally suspended. All of her results achieved after 24 August 2018 were also stripped.
Jenna Elizabeth Prandini is an American track and field athlete, known for sprinting, but originally began her career doing jumping events. She is a two-time national champion at 200 meters, a 2016 Olympian, and a 2020 Olympic silver medalist.
Elaine Thompson-Herah is a Jamaican sprinter who competes in the 60 metres, 100 metres and 200 metres. Regarded as one of the greatest sprinters of all time, she is a five-time Olympic champion, the fastest woman alive in the 100 m, and the second fastest alive in the 200 m.
The Refugee Olympic Team competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016, as independent Olympic participants.
Sydney Michelle McLaughlin-Levrone is an American hurdler and sprinter who competes in the 400 meters hurdles. She is the 2020 Tokyo Olympic champion with the Games record, and 2022 World champion with a world record time of 50.68 seconds. Setting four world records during 13 months, she was the first woman to break the 52-second and 51-second barriers in the 400 m hurdles. She won the silver medal at the 2019 World Championships. At all three competitions, she also took gold as part of a women's 4 × 400 m relay team.
Glory Onome Nathaniel is a Nigerian athlete specialising in the 400 metres hurdles. She represented her country at the 2017 World Championships reaching the semifinals. Additionally, she won three silver medals at the 2017 Islamic Solidarity Games.
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.
Elina Tzengko is a Greek javelin thrower. She won the gold medal at the 2022 European Athletics Championships, becoming the youngest ever javelin and Greek European champion. Tzengko took a silver and a gold at the 2021 World and European Under-20 Championships respectively. She is considered as one of the talents of Greek classical sport.
