Great Britain, represented by the British Olympic Association (BOA), competed at the 1996 Summer Olympics in Atlanta, United States. British athletes have competed in every single Summer Olympic Games. 300 competitors, 184 men and 116 women, took part in 175 events in 22 sports. The Atlanta games saw Great Britain's worst performance at a Summer Olympics since 1952, finishing in 36th position with a single gold medal, and 15 medals overall.
Leslie Djhone is a French track and field athlete who competes in the 400 metres and 4 x 400 metres relay.
Venezuela competed at the 1972 Summer Olympics in Munich, West Germany. 23 competitors, 20 men and 3 women, took part in 27 events in 4 sports.
Jamaica competed at the 1984 Summer Olympics in Los Angeles, United States. 45 competitors, 31 men and 14 women, took part in 35 events in 5 sports.
Danny D. McFarlane, OD is a Jamaican hurdler, who has won numerous international medals in individual and relay contests. Having won five medals at the World Championships in Athletics and an Olympic bronze medal with the Jamaican 4 x 400 metres team, McFarlane has also won in individual competition: he took an Olympic silver medal in the 400 metres hurdles at the 2004 Athens Olympics. He competed collegiately for the University of Oklahoma. At Oklahoma, McFarlane won the 1997 4 × 400 meter relay at the NCAA Division I Outdoor Track and Field Championships.
Ghana competed at the 1968 Summer Olympics in Mexico City, Mexico.
Kenya competed at the 1972 Summer Olympics in Munich, West Germany. 57 competitors, 55 men and 2 women, took part in 29 events in 4 sports.
Andrew William Carter is a male British retired track and field athlete.
The men's 200 metre freestyle event at the 2000 Summer Olympics took place on 17–18 September at the Sydney International Aquatic Centre in Sydney, Australia. There were 51 competitors from 44 nations, with each nation having up to two swimmers.
Vito Petrella is a former Italian sprinter who specialized in the 400 metres.
David Walters, also known as Dave Walters, is an American former competition swimmer, Olympic gold medalist, and world record-holder in the 4x200 meter freestyler relay. At the 2008 Summer Olympics, Walters earned a gold medal by swimming in the heats of the 4×200-meter freestyle relay. As part of the American team, he also formerly held the world record in the 4×100-meter medley relay. Walters is also a seven-time medalist at the World Aquatics Championships.
Matteo Galvan is an Italian athlete who specializes in the 200 and 400 metres. His career highlight so far is the 2009 European Indoor Championships, where he placed sixth in the 400 metres and won a gold medal in the relay.
David Patrick is a retired American hurdler. He ran the 400 metres hurdles in the 1992 Summer Olympics and was the second American in the final. The race was won by Kevin Young while setting the still standing current world record in the event.
Conor James Dwyer is a former American competition swimmer and Olympic gold medalist. He competed in freestyle and medley events, and won a gold medal as a member of the winning U.S. 4×200-meter freestyle relay team at the 2012 Summer Olympics. In total, he has won seventeen medals in major international competitions: nine gold, six silver, and two bronze spanning the Summer Olympics, the FINA World Championships, the Pan Pacific Championships, and the Pan American Games. Dwyer placed second at the 2016 US Olympic Swimming Trials in the 400m freestyle.
Félix Adolfo Martínez Cuevas is a Puerto Rican sprinter, who specialized in the 400 metres. He set both a national record and a personal best time of 45.92 seconds by finishing third for the 400 metres at the 2007 Ponce Grand Prix in Ponce.
Sidney Mark Ujakpor Sánchez is a Spanish athlete specializing in the 400 metres and 400 metres hurdles. His coach is David López Capapé, former 400 metres hurdler and orthopaedic surgeon.
Yasmani Copello Escobar is a Cuban-born track and field hurdler who represents Turkey internationally. His personal best for the 400 metres hurdles is 47.81 seconds, set in the final of the 2018 European Athletics Championships in Berlin.
Cierra Runge is an American competition swimmer.
Eric Davis Phillips Roberts is a retired Venezuelan sprinter. He competed in the men's 400 metres at the 1972 Summer Olympics.
Emmanuel Kipkurui Korir is a Kenyan middle-distance runner. He is the 2020 Tokyo Olympic and 2022 World champion in the 800 metres. Korir won the silver medal in the event at the 2018 African Championships in Athletics.
Venezuela 
