Usain Bolt runs the 100 meters at a top recorded speed of about 27.79 miles per hour (approximately 44.72 kilometers per hour). His world record time for the 100 meters is 9.58 seconds, set at the 2009 World Championships in Berlin, during which he reached this highest speed between the 60 and 80 meter marks of the race.

Bolt's average speed for the entire 100 meters during that record run was about 10.44 meters per second (37.58 km/h or 23.35 mph). His remarkable speed and height (1.95m) make him an extraordinary sprinter because typically shorter athletes with faster acceleration dominate this distance, yet Bolt was able to combine his longer stride with incredible speed and coordination.