World record

In the United States the form World's Record was formerly more common. The term World Best was also briefly in use.[citation needed] The latter term is still used in athletics (track and field) to describe performances not recognized as an official world record: either because the event is a non-qualifying event (e.g. the 150 m run or individual events in a decathlon), or because it does not fulfill other criteria of an otherwise qualifying event (e.g. the Great North Run half-marathon, which has an excessive downhill gradient).

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