Usain St. Leo Bolt was born in 1986 and is a Jamaican runner and eight-time Olympic gold-medal winner. He is also known as "Lightning Bolt". Some people call him the fastest man in the world. He has run 100 metres in 9.58 seconds and 200 metres in 19.30 seconds. He took part in the 2012 London Olympics, and won gold in the 100