from wikipedia:
"The highest human footspeed ever recorded is 48 km/h (29.8 mph)"
so a 10 year old homeless kid living with gazzelles can top that. booooooooshhhhiiiiiitt.
not to be a dick, but there has been vast discussion on this topic in previous pages.
at least i didnt give you a FAIL.
if you still have questions ill be more then happy to answer them.