20 Maybe?
The average speed of the world record in the 100m dash is around 37.58 km/h (23.35 mph).
Kristy Coventry from Zimbabwe rewrote the world record for the women's 100m breastroke, and the record is 58.77 seconds.
10.49s
47sec
Asafa Powell set the 100m World Record three times during his career.
Steffen Deibler holds the world record in the 50m butterfly. http://en.wikipedia.org/wiki/List_of_world_records_in_swimming
9.58 sec
9.6 secones
Florence Griffiths-Joyner
Robert Michael Hensel set a Guinness and Ripley's World record for the longest non stop wheelie in a wheelchair covering a total distance of 6.178 miles, on Oct 3rd 2002 in Oswego, New York. The reason for his world record was to help raise money for wheelchair ramps throught his community.
Usain Bolt broke the 100m world record 3 times and the 200m world record 2 times. He first broke the 100m record May 31, 2008. He rebroke it August 16, 2008 and August 16, 2009. He first broke the 200m world record August 20, 2008. He rebroke the 200m world record August 20, 2009.
20:58 ...Usain Bolt