How fast is human running? The fastest person on our planet today is the Jamaican athlete Usain Bolt. He ran a 100-meter sprint at the 2008 Beijing Summer Olympics with a world record of 9.58 seconds, which is about 37.6 kilometers per hour or 23.4. mile. per hour. During the short sprint, Bolt reached an astonishing 12.3 m / s (27.51 mph / 44.28 km / h) and (27.51 mph / 44.28 km / h). As a physical activity, running is different in quality from walking. While running, one’s legs are bent, the muscles are forced to stretch, and then contract during acceleration. As the mass of the body changes, the possible gravity energy and kinetic energy in the human body will change. This is thought to be due to the alternating release and absorption of energy in the muscle. Scholars believe that the fastest-running elite sprinters are those who run economically, which means they use less energy per unit of distance. The ability to do so is influenced by muscle fiber distribution, age, gender and other anthropometric factors. The fastest of the elite players is the young. The possible speed of the runner is also affected by biomechanical variables, some of which are attributed to the cycle of the runner’s gait.