Usain Bolt's top speed reached during his world-record 100-meter sprint was approximately 27.79 miles per hour (about 44.7 kilometers per hour). This top speed occurred around the 60 to 80-meter mark in his record-setting 9.58-second run at the 2009 World Championships in Berlin, which remains the fastest 100-meter time ever recorded. His average speed for the entire 100 meters was about 23.35 miles per hour (37.58 kilometers per hour), but his peak speed was significantly faster, making him the fastest human ever timed.