Félix Sánchez is a retired Dominican-American track and field athlete. He is of Dominican descent, was born and raised in the United States, and competed for the Dominican Republic, specializing in the 400 meter hurdles. He is a two-time Olympic gold medallist, winning gold in 2004 and 2012, and was also World Champion in 2001 and 2003. Just before turning 36, he set the Masters M35 World Record with a time of 48.10. Sanchez acquired many nicknames: "Super Felix", "the Invincible", "Superman", and "the Dictator".
Ronald Joseph Forbes is a track athlete from the Cayman Islands.
Luguelín Miguel Santos Aquino is a Dominican sprinter, who specialises in the 400 m. He was the silver medallist in the event at the 2012 London Olympics at the age of nineteen. His personal best is 44.11 seconds.
Roxroy Cato is a Jamaican athlete specialising in the 400 metres hurdles. He placed 5th in his heat in a time of 49.03s at the 2012 Olympics.
Karsten Warholm is a Norwegian sprinter who competes in the 400 metres and 400 m hurdles. He is the 2020 Tokyo Olympic champion, silver medalist at the 2024 Paris Olympics, three-time world champion and world record holder in the latter event.
Wenda Nel is a South African athlete specialising in the 400 metres hurdles. She competed at the 2011 World Championships reaching the semifinals.
Meghan Beesley is an English track and field athlete specialising in the 400 metres hurdles. She competed at the 2013 World Championships narrowly missing the final. Earlier in her career, she also competed in the heptathlon. Beesley broke the world record for the rarely contested straight 200 metres hurdles by 0.69 seconds at the 2014 Great City Games in Manchester.
Nicholas Kiplagat Bett was a Kenyan track and field athlete who competed in the 400 metres hurdles. His personal best for the event is 47.79 seconds. He was a world champion in the event, having won in 2015, and a two-time bronze medallist at the African Championships in Athletics. He died in a road accident in Kenya at the age of 28.
Ayomide Temilade Oluwatoyosi Folorunso is an Nigerian-Italian athlete specialising in the 400 metres hurdles. She competed in the 4 × 400 metres relay at the 2015 World Championships in Beijing.
Aron Kipchumba Koech is a Kenyan hurdler. At the 2015 Athletics Kenya World Championship Trials he finished third in the 400 metres hurdles event. Later that year he represented Kenya in the 400 metres hurdles event at the 2015 World Championships in Athletics in Beijing, China. With a personal best, in a time of 49.38, he finished 22nd in the heats. He was qualified for the semi-finals where he finished 19th in a time of 49.54. Again in 2016 he finished third at the 2016 Athletics Kenya Olympic Trials behind his brother and Boniface Mucheru Tumuti. At the Olympics, Koech made the final while his brother was disqualified in the heats. Tumuti went on to capture the silver medal in National Record time, while Koech finished seventh. His 48.49 in the semi-final round is his personal record.
Evelis Jazmin Aguilar Torres is a Colombian athlete competing in the combined events. Earlier in her career she specialised in the 400 metres sprint.
Ricardo Cunningham is a Jamaican middle-distance runner turned 400 metres hurdler. He represented his country at the 2017 World Championships as well as the 2015 Pan American Games and two Commonwealth Games.
Gianna Ursula Woodruff Washington is a track and field athlete specializing in the 400 metres hurdles. Born in the United States, she represented Panama at the delayed 2020 Tokyo Olympics improving her own South American record with a time of 54.22 seconds in the semi-finals to finish 7th in the final.
The men's 400 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.
Fiorella Chiappe y Madsen is an Argentine athlete specialising in the 400 metres hurdles. She won the gold medal in the 400 metres hurdles at the 2018 South American Games and holds the national record of 56.08. Previously she competed in the heptathlon winning, among others, a silver medal at the 2014 South American Games.
Vít Müller is a Czech athlete specialising in the 400 metres hurdles. He won a bronze medal in the 4 × 400 metres relay at the 2017 Summer Universiade.
The men's 400 metres hurdles competition of the athletics events at the 2019 Pan American Games will take place between the 6 and 8 of August at the 2019 Pan American Games Athletics Stadium. The defending Pan American Games champion is Jeffery Gibson from the Bahamas.
The men's 4 × 400 metres relay competition of the athletics events at the 2019 Pan American Games took place on the 10 of August at the 2019 Pan American Games Athletics Stadium. The defending Pan American Games champion is Trinidad and Tobago.
Kenneth Selmon is an American track and field athlete who specializes in the 400 metres hurdles. He won the USA Outdoor Championship in 2018 and represented his country at the 2018 Athletics World Cup in London, where he won the 400 metres hurdles.
The men's 400 metres hurdles at the 2022 World Athletics Championships was held at the Hayward Field in Eugene from 16 to 19 July 2022.
