Johan Frithiof Isidor "John" Svanberg (1 May 1881 – 11 September 1957) was a Swedish runner. He competed in the 5 miles and marathon at the 1906 Intercalated Games and 1908 Summer Olympics and won two silver and one bronze medals. In 1908 he set a world record over 3000 m that stood until 1911.
|Born||1 May 1881|
|Died||11 September 1957 (aged 76)|
New York City, United States
|Height||168 cm (5 ft 6 in)|
|Weight||59 kg (130 lb)|
|Club||Fredrikshofs IF, Stockholm|
|Achievements and titles|
|Personal best(s)||5 miles – 24:47.6 (1907)|
Marathon – 2:58:21 (1906)
After the 1908 Olympics Svanberg was deprived of his amateur status for some commercial activities. He moved to the United States, where he worked as a painter and continued competing in running. He died in New York in 1957.
| Men's 3,000 m World Record Holder
21 August 1908 – 11 June 1911
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