Muriel Hurtis-Houairi is a French track and field athlete. She came to prominence in 2002 when she won the 200 m gold medals at both the European Indoor Championships and the European Athletics Championships. The following year she added the World Indoor title and won a bronze medal at the 2003 World Championships in Athletics and a gold in the 4×100 metres relay with France.
Claudia Marx is a German athlete. She runs in the 400 metres and the 400 metres hurdles. She also competes in the German team in the 4 × 400 metres relay. She won the 400 metres at the German Athletics Championships in 2003 and 2004 and in the National Indoor Championships in 2005. She is 1.72 metres tall and weighs 59 kg. She currently studies sport sciences at the Humboldt University of Berlin. she came 4th in 400m hurdles.
Lorraine Fenton is a retired Jamaican athlete who specialized in the 400 metres.
Michael Blackwood is a Jamaican male track and field athlete, who specialized in the 400 meters, his personal best being 44.60 set during his win at the 2002 IAAF World Cup. He was chosen as the Jamaica Sportsman of the Year in 2002, in that same year he was the world number one rank by IAAF in the 400 meters. He is the brother of Catherine Scott who earned a silver medal in the 2000 Sydney Olympic Games. Blackwood won the NAIA national 400 meters title in 1997. He is the winner of Jamaica 400 meters national championships three times. Blackwood holds the Big 12 conference record in the 400 meters since 2000 in the time of 44.69. He is an alumnus of The University of Oklahoma.
Janeth Jepkosgei Busienei is a Kenyan middle distance runner and former world champion.
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.
Aleksandra Andreyevna Fedoriva is a Russian track and field athlete who competes mainly in sprinting events.
Keila da Silva Costa is a Brazilian long jumper and triple jumper. She has competed in three Olympic Games, 2004, 2008 and 2012, and has reached the final round both there and in World Championships and World Indoor Championships. She is the South American record holder in triple jump with 14.58 metres, and has 6.88 metres in the long jump. Both results were achieved in 2007.
Mark David Hylton is a former British 400 metres sprinter. Hylton won a silver medal in the relay at the 1996 Summer Olympics in Atlanta.
Antonina Yefremova is a Ukrainian sprinter who specializes in the 400 metres. Yefremova received a two-year ban in 2012 for using testosterone at the 2011 World Athletics Championships.
Spencer gave birth to son Michael Carter Jr on April 25,2021
Seltana Aït Hammou is a Moroccan middle-distance runner who specialises in the 800 metres. She represented her country at the 2004 Summer Olympics and has also competed at the World Championships in Athletics and the IAAF World Indoor Championships. She has also been the gold medallist at number of major events including the 2001 Mediterranean Games, the 2003 Military World Games, the 2007 Pan Arab Games and the 2009 Jeux de la Francophonie.
Shellene Williams is a retired female track and field sprinter from Jamaica. She specialized in the 200 metres and the 400 metres. Her personal best time in the women's 200 metres was 23.50 seconds, achieved in May 2004, and her 400 m best was 51.94 seconds, set in June 2004. Williams won a bronze medal in the women's 4×100 metres relay at the 2003 Pan American Games, alongside Lacena Golding-Clarke, Judyth Kitson, and Danielle Browning.
Muizat Ajoke Odumosu Alademerin is a Nigerian track and field athlete who specialises in the 400 metres and the 400 metres hurdles. She represented Nigeria at the 2008 and 2012 Summer Olympics and competed at the World Championships in Athletics in 2007, 2009, 2011 and 2013. She was the bronze medallist at the 2007 All-Africa Games and went on to become the continental champion with a win at the 2008 and 2012 African Championships.
Julian Forte is a Jamaican track and field sprinter. His personal bests are 9.91 seconds for the 100 metres and 19.97 seconds for the 200 metres.
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.
Kendall Baisden is an American track and field sprinter who specializes in the 400-meter dash. She holds a personal record of 50.46 seconds for the distance, set in 2014.
Jacqueline "Jackie" Pusey is a Jamaican former track and field sprinter. She competed over distances from 100 metres to 400 metres. She represented Jamaica at the 1976 Summer Olympics and competed a second time at the 1980 Summer Olympics.
Suziann Reid is an American-Jamaican former track and field sprinter who specialized in the 400-meter dash. She set a personal record of 50.74 seconds for the distance in 1999. She was a silver medalist with the American women's 4 × 400-meter relay team at the 1999 World Championships in Athletics. She was part of the World Championship team twice more, in 2001 and 2005, and helped the United States to silver at the 2002 IAAF World Cup and gold at the 2001 Goodwill Games.
Sarah Bouaoudia is a retired Algerian heptathlete.
Jamaica 
