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37.57 km/h Human (running)
On 16 Aug 2009, Usain Bolt (JAM) won the World Championships 100 m in 9.58 sec in Berlin, Germany. His average speed was 37.57 km/h (23.34 mph), with a peak speed nearer 44 km/h (27.34 mph).
From tanks to roller-coasters, biplanes to spaceships, the story of speed records is also the story of human development – how we have pushed the boundaries of technological possibilities in order to defy nature and travel faster than ever before.