What is the fastest speed of a human?

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Answer:

Answer

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.

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 60^th and the 80^th meter) by Usain Bolt.

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