Usain Bolt is an athlete.
The 100 metres , or 100-metre dash , is a sprint race in track and field competitions . The 11th World Championships in Athletics , under the auspices of the International Association of Athletics Federations ( IAAF ) , were held at Nagai Stadium in Osaka , Japan from 24 August to 2 September 2007 . The men 's 100 metres at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 22 and 23 August . The 4 × 100 metres relay at the World Championships in Athletics has been contested by both men and women since the inaugural edition in 1983 . Usain Bolt . He also holds the world record as a part of the 4 × 100 metres relay .