I was asked several times tonight what is Usain Bolt’s Top speed in MPH? (miles per hour)
Remember, I am in London so we are using the Imperial system here, not SI.
The answer is 27.794 mph (miles per hour)
How did I deduct this?
Easy, his fastest recorded split was a 20 meter split of 1.61 seconds from the 2009 Berlin World Championships, en route to a 9.58 world record. (Click here for the IAAF Biomechanical analysis in PDF)
That makes a 0.805 10 meter split or 44.720 Km/hr or 27.794 Mph.
It will be a long time until we see a 30 mph sprinter.
Remember when the Holy Grail was 0.83 seconds per 10 meter split?
Even the old “record” of 0.82 seconds per 10 meters translates to “only” 43.90 Km per hour. So 44 Km/hr is quite a feet.
In comparison, a cheetah can attain short bursts of speed well over 100 km/hr (62 mph), the American quarter horse has reached 88 km/hr (55 mph), and greyhounds can reach 70 km/hr (43 mph). So 44 is “slow”.