The 1948 Summer Olympics were an international multi-sport event held from 29 July to 14 August 1948 in London, United Kingdom. Following a twelve-year hiatus caused by the outbreak of World War II, these were the first Summer Olympics held since the 1936 Games in Berlin. The 1940 Olympic Games had been scheduled for Tokyo and then for Helsinki, while the 1944 Olympic Games had been provisionally planned for London. This was the second time London had hosted the Olympic Games, having previously hosted them in 1908, forty years earlier. The Olympics would again return to London 64 years later in 2012, making London the first city to have hosted the games three times, and the only such city until Paris and Los Angeles host their third games in 2024 and 2028, respectively. The 1948 Olympic Games were also the first of two summer Games held under the IOC presidency of Sigfrid Edström.
Finland competed at the 1948 Summer Olympics in London, England. 129 competitors, 123 men and 6 women, took part in 84 events in 16 sports. As the country hosted the next Olympics in Helsinki, a Finnish segment was performed at the closing ceremony.
Iceland competed at the 1948 Summer Olympics in London, England. The country was represented by 1 man in Art competitions, 11 men in athletics and 5 men and 3 women in swimming.
The men's 200 metres sprint event at the 1948 Summer Olympics took place between 2 August and 3 August. There were 51 competitors from 28 nations. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The final was won by American Mel Patton. His countryman Barney Ewell earned silver, making this the third consecutive Games the United States took the top two spots in the event. Lloyd La Beach's bronze gave Panama a medal in its debut in the event.
The men's 400 metres sprint event at the 1948 Olympic Games took place between August 4 and August 5. Fifty-three athletes from 28 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The final was won by Jamaican Arthur Wint coming from almost 10 meters back to catch teammate and world record holder Herb McKenley. This was Jamaica's first Olympic gold medal in any event, and broke a string of 3 straight American victories in the men's 400 metres.
The men's 5000 metres event at the 1948 Olympic Games took place July 31 and August 2. The final was won by Gaston Reiff of Belgium.
The men's 10,000 metres event at the 1948 Olympic Games took place July 30. The final was won by Emil Zátopek of Czechoslovakia.
The men's 3000 metres steeplechase event at the 1948 Summer Olympic Games took place on 3 and 5 August. The final was won by Swede Tore Sjöstrand. Sjöstrand's compatriots, Erik Elmsäter and Göte Hagström took 2nd and 3rd place.
The men's 4 × 100 metres relay event at the 1948 Olympic Games took place on August 6 & August 7. The United States team won the final, but was initially disqualified when officials thought the pass between Barney Ewell and Lorenzo Wright had taken place outside the zone. After further review, officials saw that the pass took place inside the zone, and restored U.S. results.
The men's 4 × 400 metres relay event at the 1948 Olympic Games took place on 6 and 7 August. The United States team won the final with a time of 3:10.4.
The men's 10 kilometres walk event at the 1948 Summer Olympic Games took place from 3 to 7 August. The final was won by Swede John Mikaelsson. This was the first time since 1924 the event took place.
The men's 50 kilometres walk event at the 1948 Summer Olympic Games took place July 31. The final was won by Swede John Ljunggren.
The men's triple jump event was part of the track and field athletics programme at the 1948 Summer Olympics. The competition was held on 3 August 1948. Twenty-eight athletes from 17 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The final was won by Arne Åhman of Sweden. It was Sweden's first victory in the event since 1912, and first medal since 1932. Australia reached the podium for the second Games in a row with Gordon George Avery's silver. Turkey received a medal in its first appearance in the triple jump with Ruhi Sarialp's bronze; it was the only track and field athletics medal won by Turkey in the 1900s.
The men's shot put event was part of the track and field athletics programme at the 1948 Summer Olympics. Twenty-four athletes from 15 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The competition was held on 3 August. The final was won by American Wilbur Thompson. Thompson's compatriots, Jim Delaney and Jim Fuchs took 2nd and 3rd place. It was the ninth time that an American had won the event, and the fifth time that the Americans had swept the medals.
The men's javelin throw event was part of the track and field athletics programme at the 1948 Summer Olympics. The competition was held on August 4. The final was won by Tapio Rautavaara from Finland.
The men's hammer throw event was part of the track and field athletics programme at the 1948 Summer Olympics. The competition was held on July 31. There were 24 competitors from 17 nations. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The final was won by Imre Németh of Hungary. It was the nation's first medal in the men's hammer throw. Ivan Gubijan of Yugoslavia took silver; that nation also earned its first medal in the event. Robert Bennett of the United States received the bronze medal, returning the American team to the podium after a one-Games absence.
The women's 200 metres sprint event at the 1948 Olympic Games took place on August 5 and August 6. The final was won by Dutch athlete Fanny Blankers-Koen. It was the first time this event was included in the Summer Olympics.
The men's marathon event at the 1948 Summer Olympic Games took place on August 7. Forty-one athletes from 21 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The race was won by Delfo Cabrera of Argentina, the nation's second victory in three Games. Tom Richards's silver medal put Great Britain on the podium for the third time in a row, while Étienne Gailly earned Belgium's first marathon medal with his bronze.
The women's 80 metres hurdles event at the 1948 Summer Olympic Games took place on 3 and 4 August. The final was won by Dutch athlete Fanny Blankers-Koen.
The women's 4 × 100 metres relay event at the 1948 Olympic Games took place on August 7. The Dutch team won with a time of 47.5.
