fastest speed achieved by sprinting
1st January 2011: As by end of 2010, the highest speed of human recorded was of 44.72 km/h (27.79 mph), seen during a 100 meters sprint (average speed between the 60th and the 80th meter) by Usain Bolt. The fastest speed of a human running was set by Maurice Greene, who achieved a sprint speed of 26.7 mph. Note that is anarobic : the highest sustained speed is just over 15 miles an hour - i.e. a 4 minute mile. So the first is the limit of the legs, the second the limit of the heart.