Regina George Grause is an American-born Nigerian sprinter who specializes in the 400 metres. She represented Nigeria at the 2012 Summer Olympics and was the silver medallist at the African Championships in 2012.
Vernon Larnard Norwood is an American track and field athlete who specializes in the 400 meters.
Michael Arthur Norman Jr. is an American sprinter. He previously held 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 on sixth 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.
Fredrick Lee Kerley is an American track and field sprinter. He was the Olympic silver medalist over 100 m at the 2020 Olympics and bronze medalist at the 2024 Olympics in the same event. Kerley has earned an additional six medals at the World Championships, most notably 100m gold at the 2022 edition. He has also medalled in the 400m, 4 x 100m relay, and 4 × 400 m relay and won eleven Diamond League races, including two Diamond League finals - the 400m in 2018 and the 100m in 2021.
Rai Benjamin is an American 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. He won a silver medal at his first Olympic Games in 2021 and won the 400 m hurdles race at the 2024 Summer Olympics. Benjamin also won silver medals 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.
Rhasidat Adeleke is an Irish sprinter.
Jonathan Jones is a sprinter from Barbados.
Bryce Deadmon is an American track and field athlete. In July 2023, he became US national champion in the 400 meters.
Elija Godwin is an American athlete who specialises in the 400 metres.
Sean Bailey is a Jamaican athlete.
Talitha LaNae Clark Diggs is an American track and field sprinter specializing in the 400 meters. Diggs won the 2022 U.S. national 400 m title.
Britton Wilson is an American track and field athlete specializing in the 400 meters hurdles and 400 meters. She finished fifth in the 400 m hurdles at the 2022 World Athletics Championships, her major championship debut. Wilson is the North American indoor record holder for the 400 m dash with a time of 49.48 seconds, set on March 11, 2023, in Albuquerque.
Ryan Willie is an American sprinter who specializes in the 400 meters.
Quincy Hall is an American track and field athlete who competes over 400 meters and 400m hurdles. He won the gold medal at the 2024 Summer Olympics in the 400 metres event.
Rosey Effiong is an American track and field athlete.
Alexis Holmes is an American track and field athlete who competes over 400 metres.
Amber Anning is a British sprinter. A double Olympic medalist, she holds the British record for 400 metres, 49.29 seconds, which she took finishing fifth in the women's 400 metres at the 2024 Paris Olympics.
Bailey Lear is an American track and field athlete who competes over 400 metres.
Quincy Wilson,OLY is an American track and field athlete who specializes in the 400 meters. In March 2024, competing for Maryland's Bullis School, he set an under-18 world best for the indoor 400-meter dash. In July 2024, he set the under-18 world best for the outdoor version of the same event. In setting these records, Wilson is also the American high school record holder in the indoor and outdoor 400 meters.
Na'Asha Robinson is an American tracks and field athlete who competes as a sprinter.
