The year he turned 16, he won the 200m at the World Junior Championships in Kingston as the youngest winner of a global under-20 title. The year he turned 17, he ran 20.13 seconds at the Pan American Junior Championships, equaling the world junior record. The year he turned 18, he set a world junior record of 19.93 seconds in the 200m. The year he turned 21, he won silver medals in the 200m and the 4x100m relay at the World Championships in Osaka.
The breakthrough yearThe year he turned 22, he lowered the 100m world record to 9.72 seconds in May, then won the Olympic 100m in Beijing in a world-record 9.69. He added the 200m in 19.30 and the relay in 37.10, both world records.
The year he turned 23, he ran 9.58 in the 100m and 19.19 in the 200m at the World Championships in Berlin, and received the Order of Jamaica in October. The year he turned 25, he was disqualified from the world 100m final in Daegu for a false start. The year he turned 26, he defended the Olympic 100m title in an Olympic record of 9.63 seconds.
The year he turned 28, he anchored Jamaica to relay gold at the Commonwealth Games in Glasgow. The year he turned 29, he said in February that he would retire after the 2017 World Championships, and in August he beat Justin Gatlin by one hundredth of a second in the 100m final in Beijing. The year he turned 30, he won a third Olympic 100m title in Rio and the relay, and in December he was named World Athlete of the Year for a sixth time.
The year he turned 31, the IOC stripped Jamaica of the 2008 relay gold in January, Bolt pulled up in his final race at the World Championships in London in August, and a statue of him was unveiled in Kingston in December.
The year he turned 32, he trained with football clubs in Norway and Australia and scored twice in his first start for Central Coast Mariners in October. The year he turned 37, his lawyers said that more than $12.7 million was missing from his account with a private investment firm in Jamaica.
The year he turned 39, he said in Tokyo that he was not worried about sprinters breaking his world records. The year he turned 40, he was listed as a registered player for a Manchester veterans football team in August and was an ambassador for the first World Athletics Ultimate Championship in September.
Usain Bolt (born Aug 21, 1986) won the world junior 200m on Jul 19, 2002, the year he turned 16. He became known in 2008, the year he turned 22, when he won the Olympic 100m in a world record on Aug 16, 2008. He ran the 100m world record of 9.58 on Aug 16, 2009.
Ages are by calendar year (the year minus the birth year), birthdays aside.