The women's 800 metres at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 20 to 23.
American Samoa sent a team to the 2008 Summer Olympics in Beijing, China. The U.S. territory selected four athletes to compete in three sports: swimming, athletics and judo. The dependency's participation in Beijing marked its seventh participation in any Olympic game since its debut at the 1988 Summer Olympics in Seoul, and its sixth participation at any Summer Olympic games. Of the four American Samoan athletes who participated in Beijing, all four were first-time Olympians and born outside American Samoa and none of the four advanced past the qualification or preliminary rounds of their events. More women participated in the 2008 American Samoan Olympic delegation than in any one delegation in its Olympic history. Judoka Silulu A'etonu was the territory's flagbearer at the ceremonies.
Geena Gall, is an Olympic American mid-distance runner who ran for the University of Michigan. Gall's achievements include back to back NCAA Outdoor Championships in the 800m in 2008 and 2009, representing the USA at the 2012 Olympic Games in London and 2009 World Championships in Athletics in Berlin, Germany in the 800m. She also competed at the North American Central American Caribbean Championships in San Salvador, El Salvador in 2007 and Toluca, Mexico in 2008. Gall was a member of the "Fab Four" who set two collegiate records at the 2007 Penn Relays, a ten-time NCAA All-American, owning two Big Ten 800 meter records and two DMR records, 10 Big Ten championships, numerous U of M school records, and at Grand Blanc High School she was a three-time national champion.
Grenada competed in the 2008 Summer Olympics, held in Beijing, People's Republic of China from 8 to 24 August 2008. Nine athletes represented the country, eight track and field athletes and one boxer. Of the eight track and field competitors, five were women, and three were men. Although none of the athletes would win a medal, runners Allison George and Neisha Bernard-Thomas progressed past the qualification rounds, and participated on behalf of Grenada in the quarterfinals of their events. Grenada's Beijing delegation was their biggest at nine athletes, and marked the seventh consecutive appearance of Grenada at the Olympics.
Sudan sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. Nine competitors, all from the Darfur region and northern Sudan, represented Sudan at the Beijing games.
Guyana sent a team to compete at the 2008 Summer Olympics in Beijing, China. Four representatives of Guyana qualified to take part in the Beijing Games–Adam Harris, Marian Burnett, and Aliann Pompey in track, and Niall Roberts in swimming–and Pompey advanced past the first round in her event, progressing to semifinals. Meanwhile, Alika Morgan and Geron Williams (cycling) took part in the Games' Youth Olympics camp, held in Beijing at the same time as the Olympics. Along with coaches and administrative members, Guyana sent a total of ten people to Beijing. The appearance of Guyana's delegation in Beijing marked the fifteenth Guyanese Olympic delegation to appear at an Olympic games, which started with their participation as British Guiana in the 1948 Summer Olympics. There were no medalists from Guyana at the Beijing Olympics. Roberts was Guyana's flagbearer at the ceremonies in Beijing.
Jamaica sent a delegation to compete at the 2008 Summer Olympics, held in Beijing, China from August 8 to August 24, 2008. This was, by far, Jamaica's best showing at the Summer Olympics; it was the nation's largest delegation yet, and its athletes nearly doubled its total gold medal count in addition to breaking the nation's record for number of medals earned in a single games. Jamaica's appearance at Beijing was its fifteenth consecutive appearance and appearance as an independent nation, although it had previously participated in four other games as a British colony and as part of the West Indies Federation. In the 29 events that included Jamaican athletes, there were 26 cases in which a Jamaican athlete or relay progressed to a final round. Usain Bolt won three of Jamaica's six gold medals at Beijing, breaking an Olympic and world record in all three of the events in which he participated. Shelly-Ann Fraser led an unprecedented Jamaican sweep of the medals in the Women's 100 m. Female sprinter Veronica Campbell-Brown carried Jamaica's flag at the ceremonies.
Trinidad and Tobago sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. Its participation in the Beijing games marked its eighteenth Olympic appearance and fifteenth Summer Olympic appearance since its debut at the 1948 Summer Olympics in London, excluding its joint participation with Jamaica and Barbados in 1960 as the West Indies Federation. With 28 athletes, more Trinidadians had competed at the Olympics than in any other single Olympic Games in its history before Beijing. Athletes representing Trinidad and Tobago advanced past the preliminary or qualification rounds in twelve events and reached the final rounds in four of those events. Of those four events, silver medals were won in the men's 100 meters and in the men's 4x100 meters relay. The latter was upgraded to gold due to one member of the quartet that crossed the line first, Nesta Carter, testing positive for a banned substance, resulting in their disqualification. The nation's flag bearer at the opening ceremony that year was swimmer and Athens medalist George Bovell.
Alia Shanee Atkinson, OD is a Jamaican five-time Olympian and a former competitive swimmer whose international competition career spanned 19 years, 2003 to 2021 inclusive, at the senior level. At short course World Swimming Championships, she is a ten-time medalist in individual events, including four gold medals, four silver medals, and two bronze medals. She won a total of 124 medals, of which 74 were gold medals, at Swimming World Cup circuits over the course of her career. She won 14 total medals in individual events, 11 gold, 1 silver, and 2 bronze, from her first three Central American and Caribbean Games, in 2006, 2010, and 2018.
The Women's 800 metres competition at the 2012 Summer Olympics in London, United Kingdom. The event was held at the Olympic Stadium on 8–11 August. The race was won by Mariya Savinova, but she has since been stripped of the gold medal for doping.
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 United States' unincorporated territory of Guam competed at the 2012 Summer Olympics in London, held from July 27 to August 12, 2012. This was the territory's seventh consecutive appearance at the Olympics.
Genzeb Shumi Regasa is an Ethiopian-born middle distance runner who competes internationally for Bahrain. She won the 1500 metres gold medal at the Asian Athletics Championships in 2011 and the Asian Indoor Athletics Championships in 2012. Her personal bests are 2:01.18 minutes for the 800 metres and 4:05.16 minutes for the 1500 m.
Pilar Shimizu is a Guamanian breaststroke swimmer. While qualifying for the 2012 Summer Olympics she broke the 20-year-old national record set by Tammie Kaae, another Olympian from Guam. At these Olympics she became the youngest Olympian ever from Guam at age 16. She finished 42nd in the 100 meter breaststroke event and did not advance to the semifinals. Shimizu also competed in the 2016 Summer Olympics. Internationally, Shimizu has earned three bronze medals at the Oceania Games and two silver medals at the Pacific Games.
Derek Mandell is a Guamanian middle-distance runner. He took part in the 2008 Oceania Athletics Championships, winning bronze, and 2008 Summer Olympics, where he broke a personal men's 800m record even though Mandell was eliminated in the first round.
Anna Rostkowska is a Polish middle-distance runner, who specialized in the 800 metres. She won a gold medal for the 800 metres at the 2001 European Athletics U23 Championships in Amsterdam, Netherlands, and silver at the 2003 Summer Universiade in Jeju City, South Korea. She also set a personal best time of 1:58.72 by finishing fourth at the 2008 ÅF Golden League in Saint-Denis, Paris.
Nicole Teter is an American middle distance runner, who specialized in the 800 metres. She is a three-time U.S. indoor champion, and a two-time Olympian. She also won a gold medal in the same category at the 2002 U.S. Outdoor Championships.
Regine Tugade-Watson is a Guamanian sprinter. She competed in the women's 100 metres event at the 2015 World Championships in Athletics in Beijing, China, as well as the girl's 200 m event at the 2015 World Youth Championships in Cali, Colombia. She competed in the women's 100 m preliminary round of the 2016 Summer Olympics. Tugade finished third place in her heat but did not progress further. She also competed in her second World Championships in 2017, competing in the 200 m. She holds seven Guamanian national records in athletics. In July 2021 she was a flag bearer in the Parade of Nations at the Tokyo Olympics opening ceremony.
Guam competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from August 5 to 21, 2016. This was the territory's eighth consecutive appearance at the Summer Olympics.
Nimali Waliwarsha Konda Liyanarachchi is a Sri Lankan 800 m runner and current national record holder in women's 1500m event. She is also believed to be the first Sri Lankan woman to have competed in steeplechase events. She became the first Sri Lankan woman to complete the distance of 3000 metres in steeplechase event under 11 minutes. She won the best athlete award twice at the Presidential award ceremonies by the Sports Ministry including the Most Outstanding Sportswoman of the Year in 2015. She is currently attached to Sri Lanka Air Force.
Guam 
