Fastest run 400 metres (male)

According to Official Guinness Records,

The fastest 400 metres run by a male athlete is 43.03 seconds, achieved by Wayde van Niekerk (South Africa) at the 2016 Olympic Games, in Rio de Janeiro, Brazil, on 14 August 2016The previous record set by Michael Johnson had stood since 1999.Wayde won gold in the event with the new world record achieved in the final.

For a complete list of 2016 records, please visit 2016 Guinness Records in Brazil.

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