Usain Bolt’s official top speed was about 44.72 km/h, which is roughly 27.8 mph, reached during his 100 m world-record run of 9.58 seconds at the 2009 World Championships in Berlin.

Quick Scoop

  • In the 100 m, Bolt set the world record of 9.58 seconds on August 16, 2009, in Berlin.
  • His average speed in that race was about 37.58 km/h (around 23.4 mph).
  • During the 60–80 m segment of that race, he hit a top speed measured at about 44.72 km/h (27.78 mph).
  • That performance still stands as the fastest 100 m ever run by a human.

So if you’re wondering “how fast was Usain Bolt,” the clean headline is: he ran 100 m in 9.58 s, hitting a top speed of about 44.7 km/h (27.8 mph) in that race.

— Information gathered from public forums or data available on the internet and portrayed here.