Allen Kenneth Johnson is an American former hurdling athlete who won the gold medal in the 110 metre hurdles at the 1996 Summer Olympics in Atlanta, Georgia. He is also a four-time world champion.
Derrick Ralph Adkins is a former American track and field athlete who specialized in the 400-meter hurdles. He was an Olympic gold medalist in that event at the 1996 Summer Olympics and World Champion at the 1995 World Championships in Athletics. He was the fastest man in the world in the 1994 and 1996 seasons, and holds a personal record of 47.54 seconds. Adkins was a two-time national champion at the USA Outdoor Track and Field Championships.
Kerron Stephon Clement is a Trinidadian-born American track and field athlete who competes in the 400-meter hurdles and 400-meter sprint. He held the indoor world record in the 400-meter sprint, having broken Michael Johnson's mark in 2005.
Alvin Leonardo Harrison is an American former track and field athlete who competed in sprinting events. He won a gold medal in the 4 x 400 metres relay at both the 1996 and 2000 Summer Olympics and a silver medal in the 400 metres at the 2000 Summer Olympics.
Antonio McKay Sr. is a former track and field athlete who specialized in the 400 meters.
The 4 × 400 metres relay or long relay is an athletics track event in which teams consist of four runners who each complete 400 metres or one lap, totaling 1600 meters. It is traditionally the final event of a track meet. The first leg and the first bend of the second leg are run in lanes. Start lines are thus staggered over a greater distance than in an individual 400 metres race; the runners then typically move to the inside of the track. The slightly longer 4 × 440 yards relay, on an Imperial distance, was a formerly run British Commonwealth and American event, until metrication was completed in the 1970s.
Me'Lisa Barber is an American sprinter. After graduating from University of South Carolina, she was the 2005 USA Outdoor Champion in the 100 metres and the 2006 World Indoor Champion in the 60 metres. She was also one of the 2003 World Champions in the 4 × 400 metres relay and one of the 2005 World Champions in the 4 × 100 metres relay.
Marek Plawgo is a Polish athlete. He mainly competes in the 400 meters hurdles, but he also starts in the 400 meters and the 4 x 400 meters relay.
Monique Hennagan is an American athlete who mainly competes in the 400 metres. She won her first relay medal at the 1999 World Indoor Championships and her second in 2003.
LaShawn Merritt is a retired American track and field athlete who competed in sprinting events, specializing in the 400 metres. He is a former Olympic champion over the distance and his personal best of 43.65 seconds makes him the eleventh fastest of all time.
Alysia Montaño is an American middle distance runner. She is a six-time USA Outdoor Track and Field Championships 800 metres champion. She gained significant publicity for the 2014 race that she competed while 8 months pregnant.
Brenda Taylor is an American track and field athlete who specialises in the 400 meter hurdles. She reached the final of the event at the 2004 Summer Olympics. She also competed at the 2001 World Championships in Athletics and won a medal at the 2003 IAAF World Indoor Championships in the 4×400-meter relay.
Deon Minor is an American former track and field athlete who specialized in the 400 meter dash. He won two consecutive gold medals in the relay at the IAAF World Indoor Championships from 1997 to 1999, setting a world record mark of 3:02.83 minutes in the latter competition.
Dmitriy Anatolyevich Bogdanov is a Russian middle-distance runner who specializes in the 800 metres. His personal best times are 1:44.33 minutes in the 800 metres and 46.50 seconds in the 400 metres.
Vernon Larnard Norwood is an American track and field athlete who specializes in the 400 meters.
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.
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.
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.
Clayton Parros is an American male track and field sprinter who specializes in the 400-meter dash. He was a runner in the gold medal-winning American 4 × 400 metres relay teams at the 2009 Pan American Junior Athletics Championships and the 2015 NACAC Championships in Athletics, setting a championship record of 3:00.07 minutes at the latter meet. He also ran as the alternate heats runner for the American teams that won gold medals at the 2014 IAAF World Indoor Championships and the 2014 IAAF World Relays.
Quentin Jarrod Iglehart-Summers is an American former track and field sprinter, who specialized in the 400-meter dash. He set a personal record of 45.46 seconds for the event in 2008. He was a gold medalist in the 4 × 400 metres relay at the IAAF World Indoor Championships in 2012. He also won a relay gold medal at the 2006 World Junior Championships in Athletics. At collegiate level he was a four-time national champion in the relay with the Baylor Bears.
