Andrew Rock is an American sprinter who specializes in the 400 meter dash.
Diane Lynn Dixon is an American athlete who competed mainly in the 400 metres. She was born in Brooklyn, New York. She has an Olympic gold medal for running with the American 4x400 meters relay team at the 1984 Olympics, running in the preliminary rounds.
Natasha Kaiser-Brown is an American sprinter who specialized in the 400 meter run. As of 2022, she is the head coach of track and field at the University of Missouri in Columbia, Missouri.
Monica Hargrove is an American track and field athlete who specializes in the 200- and 400-meter dash. She won the silver medal at the 2006 IAAF World Indoor Championships as part of the 4×400-meter relay team, and also set a world best in the sprint medley relay at the Penn Relays that year.
Francena Lynette McCorory is a retired American track and field athlete, known primarily for running the 400 meters. She was the 2011 World bronze medalist in the 400 meters and was a member of the gold medal-winning 2012 and 2016 United States Olympic 4 x 400 m relay teams. She was the IAAF 400 meter Indoor World Champion in 2014. McCorory retired in 2021.
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.
Ashley Spencer is an American track and field athlete who competes in the 400 metres and the 400 metres hurdles. In the 400m hurdles, she is the 2016 Olympic bronze medalist. In the 400m, she is the 2012 World Junior Champion and the 2016 World Indoor silver medalist. She is coached by 1996 Olympic bronze medalist Tonya Buford-Bailey.
David Verburg is an American track and field athlete who specializes in the 400 meters. He holds gold medals in the 4 × 400 m relay from the 2016 Olympics; the 2013 and 2015 World Championships; and the 2014 Indoor World 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.
Michael Arthur Norman Jr. is an American sprinter. He holds 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 as the #4 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.
Raevyn Rogers is an American middle-distance athlete. She won a bronze medal in the 800 meters at the 2020 Tokyo Olympics, becoming the fourth fastest woman in U.S. history in the event. At the 2019 World Championships, Rogers came from seventh with 100m remaining in the race to place silver over USA teammate Ajeé Wilson in bronze. She earned a world indoor title as a member of national 4x400 m relay squad that took gold at the 2018 World Indoor Championships.
Courtney Okolo is an American track and field sprinter who usually competes in the 400 metres. She starred at Carrollton (Texas) Newman Smith High School where she won multiple individual state championships.
Shaquille Walker is an American retired track runner competing for the United States and a former Brigham Young University track student-athlete.
Sydney 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.
Lynna Irby is an American track and field sprinter who competes in the 100m, 200m, and 400m dash events. At the 400m dash, she set an all-time world record at the age of 12 running 54.57 before becoming the fastest American 400m high school runner in the last 20 years. She gained 16 national titles from Jr Olympic and Youth National meets. Irby has won silver medals in the event at both the 2015 World Youth Championships and the 2016 World Junior Championships.
Kendall Ellis is an American sprinter. Ellis won gold in the 4x400 m relay and bronze in the Mixed 4x400 metres at the Tokyo Olympics. She competed in the 400 meters at the 2017 and 2019 World Championships, winning gold medals as a part of prelim 4×400 m relays. As a junior, Ellis took gold in the 4×400 m relay and bronze in the 400 meters at the 2015 Pan American Junior Championships.
Samantha "Sammy" Watson is an American middle-distance runner from New York.
Roisin Willis is an American middle-distance runner. She won the gold medal in the 800 meters at the 2022 World Under-20 Championships, adding second title for the women's 4x400 m relay.
Akala Garrett is an American track and field athlete. She won gold medals at the 2022 World Junior Championships in the 400 metres hurdles and the 4 × 400 m relay.
Quincy Hall is an American track and field athlete who competes over 400 metres and 400m hurdles.
