 Bolt also holds the 200 metres world teenage best results for the age categories 15 ( 20 @.@ 58 s ) , 16 ( 20 @.@ 13 s , world youth record ) , 17 ( 19 @.@ 93 s ) and 18 ( 19 @.@ 93 s , world junior record ) . He also holds the 150 metres world best set in 2009 , during which he ran the last 100 metres in 8 @.@ 70 seconds , the quickest timed 100 metres ever . 
