s), 16 (20.13 s, former 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. Bolt completed a total of 53 wind-legal sub-10-second performances in the 100 m during his career, with his first coming on 3 May 2008 and his last on 5 August 2017 at the World Championships. His longest undefeated streak in the 200 m was in 17 finals, lasting from 12 June 2008 to 3 September 2011. He also had a win-streak covering 14 100 m finals from 16 August 2008 to 16 July 2010. Guinness World Records Bolt claimed 19 Guinness World Records, and, after Michael Phelps, holds the second-highest number of accumulative Guinness World Records for total number of accomplishments and victories in sports. Fastest run 150 metres (male) Most medals won at the IAAF Athletics World Championships (male) Most gold medals won at the IAAF Athletics World Championships (male) Most Athletics World Championships Men's 200 m wins Most consecutive Olympic gold medals won in the 100 metres (male) Most consecutive Olympic gold medals won in the 200 metres (male) Most Olympic men's 200 metres Gold medals Fastest run 200 metres (male) Most Men's IAAF World Athlete of Year Trophies First Olympic track sprint triple-double Highest annual earnings for a track athlete Most wins of the 100 m sprint at the Olympic Games First athlete to win the 100 m and 200 m sprints at successive Olympic Games Fastest run 100 metres (male) First man to win the 200 m sprint at successive Olympic Games Most Athletics World Championships Men's 100 m wins Most tickets sold at an IAAF World Championships Most competitive 100 m sprint races completed in sub 10 seconds Fastest relay 4×100 metres (male) Average and top speeds From his record time of 9.58 s for the 100 m sprint, Usain Bolt's average ground speed equates to . However, once his reaction time of 0.148 s is subtracted, his time is 9.44 s, making his average speed . Bolt's top speed, based on his split time of 1.61 s for the 20 metres from the 60- to 80-metre marks (made during the 9.58 WR at 100m), is 12.42 m/s (). Season's bests World rank in parentheses World rankings International competitions