Usain Bolt’s top reported speed during his 100-meter world record run was about 27.3–27.8 miles per hour, reached somewhere in the middle of the race (roughly around 60 meters). That top-end velocity is often cited as the fastest speed ever measured for a human in a 100m sprint, with various sources placing it in the high 27 mph range. For context, his official world record time is 9.58 seconds set in 2009 at the World Championships in Berlin, and the mid-race peak speed occurred during the acceleration phase leading up to and just after the 60-meter mark.