Shericka Williams is a Jamaican former sprinter. Together with Novlene Williams-Mills, Ronetta Smith and Lorraine Fenton she won a silver medal in 4 × 400 metres relay at the 2005 World Championships in Athletics. She also competed in the individual contest, but was knocked out in the semifinal. Two years later, she won another silver medal in the 4 × 400 metres relay event at the 2007 World Championships in Athletics, this time with Shereefa Lloyd, Davita Prendergast and Novlene Williams-Mills. The team set a national record in that race, finishing second to the United States in a time of 3:19.73.
Sunday Bada was a Nigerian sprinter who specialized in the 400 metres event. He won three medals at the World Indoor Championships, including a gold medal in 1997. His personal best time was 44.63 seconds, and with 45.51 seconds indoor he holds the African indoor record. He set a national record in the 4 x 400 metres relay at the 2000 Olympics, where the Nigerian team also won gold medals after the disqualification of the US team who had finished first.
Jan Werner was a Polish sprinter who specialized in the 200 and 400 metres.
Nataliya Pyhyda is a Ukrainian track and field sprinter who specializes in the 200 and 400 metres. Her personal best times are 22.82 seconds (2008) and 50.62 seconds (2015), respectively.
Anyika Onuora is a British retired sprint track and field athlete who competed in the 100 metres, 200 metres and 400 metres, and also the 4×100 metres relay and 4x400 metres relay.
Marie-Louise Bévis is a retired French sprinter who specialized in the 400 metres.
Iga Baumgart-Witan is a Polish sprinter specialising in the 400 metres. She won several medals at major championships as part of Polish 4 × 400 metres relays, including a gold in the mixed relay and a silver in the women's relay at the 2020 Tokyo Olympics.
Justyna Święty-Ersetic is a Polish sprinter specialising in the 400 metres. She was the 2018 European champion and a two-time European Indoor Championship medallist in this event. Święty-Ersetic won many medals at major championships as part of Polish 4 × 400 m relays, including a gold in the mixed relay and a silver in the women's relay at the 2020 Tokyo Olympics.
Małgorzata Hołub-Kowalik is a Polish sprinter specialising in the 400 metres. She won two medals at the 2020 Summer Olympics, gold with Polish mixed 4 × 400 metres relay team and silver as a member of women's 4 × 400 metres relay team.
Paul Henderson is an Australian former track and field sprinter. He won silver medals with the Australian 4×100 metres relay team at the Commonwealth Games in 1994 and 1995 World Championships in Athletics. He shares the Oceanian and Australian record for the event at 38.17 seconds.
Jisna Mathew is an Indian sprinter from Kerala.
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.
Zoey Clark is a British sprinter. She competed in the women's 400 metres and was part of the British 4 × 400 relay team that won the silver medal at the 2017 World Championships in Athletics. Since then she has won two international bronzes in the relay and most recently a silver in the same event at the 2019 European Athletics Indoor Championships. She was selected as part of the 4x400m relay team for the Tokyo 2020 Olympic Games.
Cheriece Hylton is an English sprinter.
Natalia Kaczmarek is a Polish athlete sprinter who specialises in the 400 metres. She won the silver medal in the event at the 2022 European Championships. Kaczmarek earned several global medals as part of 4 x 400 m relays, including gold in the mixed event and silver in the women's event at the 2020 Tokyo Olympics.
Tatyana Zakharova was a professional sprinter from Russia. She won a silver medal in the 4x400m relay at the 1995 World Championships in Athletics by virtue of running for her team in the preliminary rounds.
Rebecca Borga is an Italian sprinter, specialized in the 400 metres. She competed at the 2020 Summer Olympics, in 4 × 400 m relay.
Amarachi "Ama" Pipi is a British track and field athlete who specializes in sprinting. In 2020, Pipi became the British indoor champion in the 200-meter race. She competed in the women's 400 metres event at the 2021 European Athletics Indoor Championships.
Nicole Yeargin is a Scottish-American athlete representing Great Britain who specialises in the 400 metres. She won three major medals as part of British women's 4 x 400 m relays, including bronze at the 2022 World Athletics Championships and 2023 World Athletics Championships.
Kaysha Love is an American bobsledder and former collegiate sprinter. She attended and competed in track and field at the University of Nevada-Las Vegas, where she was a two-time Second Team All-American (2017–2018). She was Utah’s 2016 Gatorade State Girls Track and Field Athlete of the Year in high school. She represented the United States at the 2022 Winter Olympics, where she competed in the two-woman bobsled.
