Keirin – literally "racing cycle" – is a form of motor-paced cycle racing in which track cyclists sprint for victory following a speed-controlled start behind a motorized or non-motorized pacer. It was developed in Japan around 1948 for gambling purposes and became an official event at the 2000 Olympics in Sydney, Australia.
The men's sprint was a track cycling event held as part of the Cycling at the 1964 Summer Olympics programme. It was held on 17 and 18 October 1964 at the Hachioji Velodrome. 39 cyclists from 22 nations competed. Nations were limited to two cyclists each. The event was won by Giovanni Pettenella of Italy, the nation's second consecutive and fourth overall victory in the men's sprint. Sergio Bianchetto took silver, making it the second consecutive Games in which Italy had two men on the podium in the event. It was also the fifth straight Games with Italy taking at least silver. Daniel Morelon of France took bronze, the first of his record four medals in the event.
The men's sprint at the 1952 Summer Olympics in Helsinki, Finland was held from July 28 to July 31, 1952. There were 27 participants from 27 nations, with each nation limited to a single cyclist. The event was won by Enzo Sacchi of Italy, the nation's second consecutive victory in the men's sprint. Lionel Cox's silver was Australia's first medal in the event. Werner Potzernheim of Germany took bronze.
The men's Keirin at the 2008 Summer Olympics took place on August 16 at the Laoshan Velodrome.
The men's sprint at the 2008 Summer Olympics took place on August 17–19 at the Laoshan Velodrome. There were 21 competitors from 15 nations, with each nation limited to two cyclists. The event was won by Chris Hoy of Great Britain, the nation's first victory in the men's sprint and first medal in the event since 1948. He faced his teammate Jason Kenny in the final, the first time since 1984 that one nation had taken the top two spots. Mickaël Bourgain of France earned bronze. Germany's four-Games podium streak ended.
The men's sprint event was part of the track cycling programme at the 1924 Summer Olympics. The field consisted of 31 cyclists from 17 countries. The Vélodrome de Vincennes track was a 500-metre (1,640 ft) loop. The event was won by Lucien Michard of France, the nation's third victory in the men's sprint. His teammate Jean Cugnot earned bronze. Jacob Meijer of the Netherlands took silver, putting the Dutch team on the podium for the second consecutive Games.
The men's sprint cycling event at the 1932 Summer Olympics took place on August 1 and 3. The format was a sprint of 1000 metres. There were nine competitors from nine nations, with each nation limited to one cyclist. The event was won by Jacobus van Egmond of the Netherlands, the nation's second victory in the men's sprint. It was the fourth consecutive Games that the Netherlands reached the podium in the event. France made the podium for the third consecutive Games, with Louis Chaillot taking silver. Bruno Pellizzari gave Italy its first men's sprint medal with his bronze.
The men's sprint at the 2000 Summer Olympics (Cycling) was an event that consisted of cyclists making three laps around the track. Only the time for the last 200 metres of the 750 metres covered was counted as official time. The races were held on Monday, 18 September, Tuesday, 19 September, and Wednesday, 20 September 2000 at the Dunc Gray Velodrome. There were 19 competitors from 14 nations, with each nation limited to two cyclists. The event was won by Marty Nothstein of the United States, the nation's first victory in the men's sprint since 1984 and second overall. Nothstein was the seventh man to win multiple medals in the event. The silver medal went to Florian Rousseau, France's first medal in the event since 1980. Two-time defending champion Jens Fiedler of Germany lost to Nothstein in the semifinals, but won the bronze medal match to become the second man to win three medals in the event.
The men's keirin in cycling at the 2000 Summer Olympics was contested by 20 cyclists. A keirin race consisted of eight laps of the track, or 2 kilometres (1.2 mi).
The men's sprint at the 1992 Summer Olympics (Cycling) was an event that consisted of cyclists making three laps around the track. Only the time for the last 200 metres of the 750 metres covered was counted as official time. The races were held on Tuesday, July 28, Wednesday, July 29, Thursday, July 30 and Friday, July 31, 1992, at the Velòdrom d'Horta. There were 23 competitors from 23 nations, with each nation limited to one cyclist. The event was won by Jens Fiedler of Germany, the first victory in the men's sprint for Germany as a unified nation since 1936. Gary Neiwand of Australia took silver, the third time that nation had a runner-up in the event; Neiwand was only the fourth man to win multiple medals in the sprint. Canada earned its first medal in the men's sprint with Curt Harnett's bronze.
The women's keirin at the 2011 Dutch National Track Championships in Apeldoorn took place at Omnisport Apeldoorn on December 29, 2011. 13 athletes participated in the contest.
The men's sprint at the 1996 Summer Olympics (Cycling) was an event that consisted of cyclists making three laps around the track. Only the time for the last 200 metres of the 750 metres covered was counted as official time. The races were held on July 24 through July 28, 1996 at the Stone Mountain Velodrome. There were 24 competitors from 16 nations, with nations once again being allowed to have up to two cyclists each. The event was won by Jens Fiedler of Germany, the second man to successfully defend an Olympic sprint title. Curt Harnett of Canada also repeated as bronze medalist; he and Fiedler were the fifth and sixth men to win multiple medals of any color in the event. Marty Nothstein of the United States took silver, the nation's first medal in the event since 1984.
The men's sprint cycling event at the 1936 Summer Olympics took place on 6 and 7 August and was one of six events at the 1936 Olympics. There were 20 competitors from 20 nations, with each nation limited to one cyclist. The event was won, in a disputed final, by Toni Merkens of Germany, the nation's first medal in the men's sprint. Arie van Vliet took the silver medal, the fifth consecutive Games that a Dutch cyclist had finished in the top two. Louis Chaillot of France became the first man to win multiple medals in the event, adding a bronze to his 1932 silver; it was the fourth consecutive podium appearance for France.
The men's sprint at the 1960 Summer Olympics in Rome, Italy was held on 26 to 29 August 1960. There were 30 participants from 18 nations. For the first time since 1924, nations were allowed to have more than one competitor each ; for the first time since 1924, one nation took multiple medals. Italians Sante Gaiardoni and Valentino Gasparella won gold and bronze, giving Italy a four-Games podium streak with three total gold medals—second all-time behind France's five. Leo Sterckx's silver was Belgium's first medal in the men's sprint.
The men's sprint cycling event at the 1984 Summer Olympics took place from 31 July to 3 August and was one of eight cycling events at the 1984 Olympics. Once again, the limit on cyclists per nation was raised to 2. The event was won by Mark Gorski of the United States, the nation's first victory in the men's sprint and first medal in the event since John Henry Lake took bronze in 1900. The final was all-American, as Nelson Vails took silver, becoming the first Olympic cycling medalist of African descent. Japan earned its first medal in the men's sprint with Tsutomu Sakamoto's bronze. France's five-Games podium streak in the event ended.
The men's sprint event at the 2020 Summer Olympics took place from 4 to 6 August 2021 at the Izu Velodrome. 30 cyclists from 18 nations competed.
The women's sprint event at the 2020 Summer Olympics took place from 6 to 8 August 2021 at the Izu Velodrome. 30 cyclists from 18 nations competed. Canadian rider Kelsey Mitchell won gold, with Olena Starikova from Ukraine and Lee Wai-sze from Hong-Kong completing the medal positions.
The men's Keirin event at the 2020 Summer Olympics took place on 7 and 8 August 2021 at the Izu Velodrome. 30 cyclists from 18 nations competed.
The women's Keirin event at the 2020 Summer Olympics took place on 4 and 5 August 2021 at the Izu Velodrome. 29 cyclists from 18 nations competed.
The men's Keirin event at the 2024 Summer Olympics took place on 10 and 11 August 2024 at the Vélodrome National de Saint-Quentin-en-Yvelines.
