Since Usain Bolt became the 100m WR holder with a 9.69 (Beijing - 2008) and now (August 17, 2009 - Berlin) a 9.58, I don't know if this figure still stands but in the 1996 Atlanta Olympics, Donovan Bailey in a WR time of 9.84 secs, covered a 10m portion at 12.1 meters per second. That would translate to about 27 MPH or about 43 Km/h. Both he and Maurice Greene hit a 10m section of the 100m final of the 1997 World Championships at 11.91 m/s... Greene ran a 9.86 and Bailey ran a 9.91. That would mean both reached a speed of roughly 26.5 MPH. Considering that, even the reductions the WR has taken in the last 12 years, it would be okay to assume 27-28 MPH is the fastest speed ever attained by a person running.
Though Bob Hayes, in 1964, ran his leg of the 4x100m relay in 8.50 seconds.
During Usain Bolt's World record 100m sprint (9.58) at the 2009 Athletic Championships in Berlin, Usain covered Bolt reaches his top speed of 12.27 m/s or 27.45 miles per hour at the 65 meter mark.
For a biomechanical breakdown of Bolt's 9.58 WR, see the related link.
A Hippo can run from 18 mph / 30 khm; to 30 mph / 50 khm and the "Average Human" can run between 14 and 27 mph (Olympic sprinters ignored for the purposes of this question) - so the answer would be that a Hippo can, on average, outrun a human.
The average mph of a human running is 12mph.
I would say 6 and above. I would say 6 mph and above.
40km/h
Average speed is about 6 mph.
17 MPH
An average of 4.29 mph.
approximately 17 mph average
A human can reach speeds up to 180mph over the mile whilst free falling through space If a human were to run a mile in four minutes, that would average out to 15 MPH.
11 mph
14 mph 22 mph - Cory Woods 14 mph 22 mph - Cory Woods
Nope. The speed of sound is ABOUT 760 mph. Fastest human runner is 27.79 mph. Not even close.