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MAThe fastest a human has ever run is 44.7 km/h, but scientists found out humans could run a lot faster!
In 2009, Usain Bolt broke the world record by running 100 meters in 9.58 seconds, reaching a top speed of 44.7 km/h — that's more than twice as fast as the legal e-scooter limit and almost as fast as a charging grizzly bear.
But scientists wanted to know how much faster humans could go—and they found something surprising.
Turns out, it's not muscle strength that's holding us back—our legs can generate way more force than we use during a sprint. The real limit is how fast our muscle fibers can contract.
During a sprint, your foot touches the ground for less than 0.1 seconds—that's all the time your muscles have to generate force.
Scientists discovered we apply 30% more force when hopping than running.
If we could apply that force while running, humans could theoretically reach speeds of 65 km/h—that's faster than a grizzly bear can run.
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