Chi Cheng is a Taiwanese track and field athlete. She was an Olympic medalist in 1968 and was named the Associated Press Athlete of the Year for 1970. She was a former pentathlete turned sprinter.
Trebisonda "Ondina" Valla was an Italian female athlete, and the first Italian woman to ever win an Olympic gold medal. She won it in the 80 m hurdles event at the 1936 Summer Olympics in Berlin, after establishing the new world record during the semi-final.
The Central African Republic competed at the 2000 Summer Olympics in Sydney, Australia. This marked sixth appearance of the nation at a Summer Olympics. The country entered three competitors; Henriette Youanga in the women's individual archery, Mickaël Conjungo in the men's discus throw and Maria-Joëlle Conjungo in the women's 100 metres hurdles. None of those athletes advanced out of their heats.
Athletics has been contested at every Summer Olympics since the birth of the modern Olympic movement at the 1896 Summer Olympics. The athletics program traces its earliest roots to events used in the ancient Greek Olympics. The modern program includes track and field events, road running events, and race walking events. Cross country running was also on the program in earlier editions but it was dropped after the 1924 Summer Olympics.
Tonga sent a delegation to compete at the 2000 Summer Olympics in Sydney, Australia from 15 September to 1 October 2000. Sydney was Tonga's fifth consecutive appearance at a Summer Olympic Games. The Tongan delegation to Sydney consisted of two track and field athletes; Toluta'u Koula and Ana Siulolo Liku; and weightlifter Tevita Kofe Ngalu. Neither of the track athletes advanced beyond the first round of their events, while Ngalu came 13th in the men's 105 kg category.
Fiji sent a delegation to compete at the 1976 Summer Olympics in Montreal, Quebec, Canada, from 17 July to 1 August 1976. This was the nation's fifth appearance at a Summer Olympic Games. Their first appearance was at the 1956 Summer Olympics in Melbourne, Australia. Fiji's delegation consisted of two competitors. Tony Moore who made it to the quarter-finals of the 200m sprint and round 1 in the 100m sprint. After not starting in the 400m sprint, he only made the qualification stage of the long jump. The other athlete was Miriama Tuisorisori-Chambault who competed in the women's pentathlon and long jump. She finished 18th overall in the pentathlon and 27th in qualifying for the long jump. She would not start in the 100m hurdles.
Aleksandra Andreyevna Fedoriva is a Russian track and field athlete who competes mainly in sprinting events.
Comoros competed at the 2012 Summer Olympics in London, England, which was held from 27 July to 12 August 2012. The country's participation at London marked its fifth appearance in the Summer Olympics since its début at the 1996 Summer Olympics. The delegation included two track and field athletes: Maoulida Darouèche and Feta Ahamada, and one swimmer, Ayouba Ali Sihame, all three qualified for the Games through wildcard places. Ahamada was selected as the flag bearer for the opening ceremony and Darouèche held it at the closing ceremony. Ahamada won her heat in the preliminary round of the women's 100 metres but was eliminated in the heat stages, while Darouèche and Sihame did not advance beyond the first round of their respective events.
Equatorial Guinea competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. The country's participation at London marked its eighth appearance in the Summer Olympics since its début at the 1984 Summer Olympics. The delegation included two track and field athletes, Benjamín Enzema and Bibiana Olama who both qualified for the Games via wildcard places because their fastest times did not meet the required qualification standards. Olama was selected as the flag bearer for both the opening and closing ceremonies. Both athletes did not advance beyond the first round of their respective events.
The African island nation of São Tomé and Príncipe competed at the 2012 Summer Olympics in London, held from 27 July to 12 August 2012. This was the nation's fifth appearance at the Olympics since its debut in 1996. Two track and field athletes, Christopher Lima da Costa and Lecabela Quaresma were selected to the team by wildcard places, without having qualified at any sporting event. Quaresma was selected as flag bearer for the opening and closing ceremonies. Neither of the two athletes progressed beyond the first round of their respective events.
Belize competed at the 2012 Summer Olympics in London, which were held from 27 July to 12 August 2012. The country's participation in London was its eleventh appearance in the Summer Olympics since its debut at the 1968 Summer Olympics. The delegation included two short-distance runners and one judoka: Kenneth Medwood, Kaina Martinez and Eddermys Sanchez. Medwood qualified by recording a time that met qualification standards while the latter two entered through wildcard places. Medwood was selected as the flag bearer for both the opening and closing ceremonies. Medwood reached the semifinals of the men's 400 metres hurdles before he was eliminated from competition while Martinez did not progress farther than the quarterfinal stage of the women's 100 metres. Sanchez was defeated by his opponent Miklós Ungvári of Hungary in a 19-second match in the Round of 32 of the men's half-lightweight judo competition.
Michelle "Shelly" Jenneke is an Australian hurdler and model. She won a silver medal for the 100 m hurdles at the 2010 Summer Youth Olympics and the 100 m hurdles at the 2016 Australian Athletics Championships to qualify for the 2016 Rio Olympic Games. In 2012, she received worldwide media attention after her pre-race warm-up dance went viral on the internet and was featured in the 2013 Sports Illustrated Swimsuit Issue.
The 100 metres at the Summer Olympics has been contested since the first edition of the multi-sport event. The men's 100 metres has been present on the Olympic athletics programme since 1896. The 100 metres is considered one of the blue riband events of the Olympics and is among the highest profile competitions at the games. It is the most prestigious 100 metres race at an elite level and is the shortest sprinting competition at the Olympics – a position it has held at every edition except for a brief period between 1900 and 1904, when a men's 60 metres was contested.
The sprint hurdles at the Summer Olympics have been contested over a variety of distances at the multi-sport event. The men's 110 metres hurdles has been present on the Olympic athletics programme since the first edition in 1896. A men's 200 metres hurdles was also briefly held, from 1900 to 1904. The first women's sprint hurdling event was added to the programme at the 1932 Olympics in the form of the 80 metres hurdles. At the 1972 Games the women's distance was extended to the 100 metres hurdles, which is the current international standard.
Ilona Bruzsenyák is a Hungarian former track and field athlete who competed in the women's pentathlon, long jump and 100 metres hurdles. She was the gold medallist in the long jump at the 1974 European Athletics Championships. Bruzsenyák represented her nation at the Summer Olympics in 1972 and 1976, competing in both long jump and pentathlon. She was a ten-time national champion at the Hungarian Athletics Championships.
Félicite Bada is a Beninese sprinter who specializes in the Women's 100 meters and Women's 200 meters events. She competed in Athletics at the 1987 All-Africa Games in August 1987, in which she ran a personal best time of 25.08 seconds in the 200 metres. At Seoul, she participated at the 1988 Summer Olympics, where she was the flag bearer for Benin. Though she only finished 7th in Heat 1 of the 100 metres, she still ran a personal best time of 12.27 seconds.
Edith Erna Oker is a German former athlete who competed in the sprint hurdles. She represented West Germany at the 1984 Summer Olympics reaching the semifinals.
Lorraine Dunn was a Panamanian sprinter and hurdler. She competed in the 4 × 100 metres relay at the 1960 and the 1964 Summer Olympics as well as the 80 metres hurdles in 1964. Dunn finished third in the 200 metres with a time of 24.7 seconds and finished fourth in the 80 metres hurdles at the 1963 Pan American Games. Dunn's international breakthrough came when she won a gold medal in the 4 x 100 metres relay at the 1959 Central American and Caribbean Games as a 16-year old. She also won a silver medal in the 80 metres hurdles and a bronze in the 4 x 100 metres relay at the 1962 Central American and Caribbean Games.
Julia Sánchez Deza was a Peruvian female track and field sprinter. Her greatest achievement was a gold medal in the 100 metres at the inaugural 1951 Pan American Games, seeing off Jean Patton of the United States. She was one of two Peruvian gold medallists at the games, alongside men's shooter Edwin Vásquez Cam. She remained her country's only female champion until hurdler Edith Noeding matched the feat in 1975.
Anna Cockrell is an American track and field athlete competing in sprinting and hurdling. She is a two-time medalist at the 2019 Pan American Games in Lima, Peru and won the silver medal at the 2024 Summer Olympics in 400 m hurdles event.
Peru 
