A 12.5-second 100m equates to a time of 4.572 seconds in the 40-yard dash.
In 2008, the Qualifying time for the 100m dash was 10.07s
Divide the 100m time by 0.9144.
Wilma time for 100 m dash was 11 plus.
9.58s for men and 10.49s for women.
Usain Bolt with 9.58s
Three seconds on the 100m dash!
9.58s by Usain Bolt in Berlin 2009.
10.82 from Gail Devers
the fastest time set by a male to do a 100m sprint is usain bolt, he did it in 9.59seconds