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Olympics Day 15 - Athletics

LONDON, ENGLAND - AUGUST 11: Usain Bolt, Yohan Blake, Michael Frater and Nesta Carter of Jamaica celebrate next to the clock after winning gold and setting a new world record of 36.84 during the Men's 4 x 100m Relay Final on Day 15 of the London 2012 Olympic Games at Olympic Stadium on August 11, 2012 in London, England. (Photo by Stu Forster/Getty Images)

World records at London Olympics

The 2012 London Olympic Games featured 30 world records in seven sports. The largest number of records were set in swimming (8). Most of the records were set by China (5), Great Britain (5) and United States (5).