 On 11 August 2013 , Bolt regained the title as world 's fastest man by winning the World Championships 100m in Moscow , with a time of 9.77s ( − 0 @.@ 3 m / s wind ) , ahead of Justin Gatlin in second with a time of 9.85s. On 17 August , Bolt won the 200 @-@ metre race for his 2nd gold medal of the world championships with a time of 19.66s. Bolt won a third gold in the 4x100 m relay , which made him the most successful athlete in the 30 @-@ year history of the world championships . 
