Michael Blackwood is a Jamaican male track and field athlete, who specialized in the 400 meters, his personal best being 44.60 set during his win at the 2002 IAAF World Cup. He was chosen as the Jamaica Sportsman of the Year in 2002, in that same year he was the world number one rank by IAAF in the 400 meters. He is the brother of Catherine Scott who earned a silver medal in the 2000 Sydney Olympic Games. Blackwood won the NAIA national 400 meters title in 1997. He is the winner of Jamaica 400 meters national championships three times. Blackwood holds the Big 12 conference record in the 400 meters since 2000 in the time of 44.69. He is an alumnus of The University of Oklahoma.
Moses Cheruiyot Mosop is a Kenyan middle and long distance athlete. He competed for Kenya at the 2004 Olympic Games and went on to take 10,000 metres bronze at the 2005 World Championships in Athletics. He has also been successful in cross country running, having won the silver at the 2007 IAAF World Cross Country Championships as well as team gold with Kenya in 2007 and 2009.
Augustine Kiprono Choge is a Kenyan middle distance and long distance runner.
Amantle Montsho is a female sprinter from Botswana who specializes in the 400 metres. She represented her country at the 2004 and 2008 Summer Olympics, reaching the final at the latter edition. She was the first woman to represent Botswana at the Olympics. She has also competed at the World Championships in Athletics and the IAAF World Indoor Championships, and is the former World Champion over the 400m, winning in a personal best time of 49.56 in Daegu.
Matthew John "Matt" Elias is a retired Welsh athlete who specialised in the 400 metres sprint and 400 metres hurdles. During his international career he represented Great Britain. In 2003 he won a gold medal at the European Championships and at the 2004 Olympic Games in Athens he finished 5th in the 4 × 400 m relay, He is also a part of Super Schools.
Michael Walter Mathieu is a retired Bahamian sprinter hailing from Freeport, Grand Bahama who specialized in the 200 metres and 400 metres. He was part of the Bahamian silver medal-winning team in the men's 4×400 metres relay at the 2008 Beijing Olympics, running second leg and recording a 44.0 split, and the gold medal-winning team at the 2012 Summer Olympics. He was also a part of second place relay team at the 2007 World Championships. He won the bronze medal in the 4x400 metres relay in the 2016 Summer Olympics.
David Kitur is a retired Kenyan runner, who specialised in 400 metres.
Simon Kemboi is a retired sprinter from Kenya. He specialised in 400 metres. He is a World Championships and African Championships medalist, and competed at the Olympics.
Asami Chiba, or Tanno, is a Japanese sprinter who specialises in the 400 metres. She is the Japanese record holder in the event, and has also broken the national record in the 4×400 metres relay on multiple occasions. She is a member of Natureal Athlete Club in Japan and is coached by Kazuhisa Kawamoto.
Mark David Hylton is a former British 400 metres sprinter. Hylton won a silver medal in the relay at the 1996 Summer Olympics in Atlanta.
In 2010 there was no obvious, primary athletics championship, as neither the Summer Olympics nor the World Championships in Athletics occurred in the year. The foremost championships to be held in 2010 included: the 2010 IAAF World Indoor Championships, 2010 European Athletics Championships, 2010 African Championships in Athletics, and Athletics at the 2010 Commonwealth Games.
Isiah Kiplangat Koech is a Kenyan long-distance runner who specialises in the 5000 metres.
Muizat Ajoke Odumosu Alademerin is a Nigerian track and field athlete who specialises in the 400 metres and the 400 metres hurdles. She represented Nigeria at the 2008 and 2012 Summer Olympics and competed at the World Championships in Athletics in 2007, 2009, 2011 and 2013. She was the bronze medallist at the 2007 All-Africa Games and went on to become the continental champion with a win at the 2008 and 2012 African Championships.
Michael Shelley is an Australian long-distance runner who competes in track events and road races. He has won gold medals in the marathon event at the 2014 Commonwealth Games at Glasgow, Scotland, as well as the 2018 Commonwealth Games at Gold Coast, Australia. He has also represented Australia at the IAAF World Cross Country Championships and the IAAF World Half Marathon Championships. On the road, he has won at the Gold Coast Half Marathon and the City2Surf race in Sydney.
Cornel Edwin Fredericks is a South African track and field athlete who competes in the 400 metres hurdles. His personal best for the event is 48.14 seconds.
Janieve Russell is a Jamaican track and field athlete who competes mainly in the 400 metres hurdles and the 400 metres sprint. She won an Olympic bronze medal in the 4 × 400 m relay in Tokyo 2021, where she also finished fourth in the 400m hurdles final in a personal best of 53.08 secs. She is a four-time Commonwealth Games gold medallist, winning the 400m hurdles title in 2018 and 2022, and the 4 × 400 m relay in 2014 and 2018. She has also won two relay silvers at the World Championships and a relay gold at the World Indoor Championships.
Dylan Borlée is a Belgian sprinter who competes in the 400 metres. He is a member of the Borlée family.
George Kiprotich "Kip" Rono is a Kenyan former steeplechase runner. He won a gold medal in the event at the 1979 African Championships in Athletics and was the first African steeplechase winner at the 1979 IAAF World Cup.
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.
Sheila Chepkirui Kiprotich is a Kenyan middle- and long-distance runner who competed earlier mainly in the 1500 metres and 5000 metres. She won the bronze medal in the 10,000 metres at the 2022 Commonwealth Games. Chepkirui was the 5000 m 2016 African champion, setting the championship record.
Kenya 
