the fastest 100m dash was set by usian bolt with 9.69 seconds and for many olympic athletes their time averages around 10-11 seconds
1 (100m dash)
Gail Devers, 10.82 sec
Alan Wells of Great Britain at the 1980 Summer Games in Moscow.
10.49 by Florence Griffith-Joyner in the 1988 Seoul Olympic games.
The event ends when a runner's torso (not the head, arm or leg) crosses the finish line.
The Olympic record for the women's 100 meter dash was set by Florence Griffith-Joyner at the 1988 Games in Seoul at a time of 10.54 seconds.
As far as the Modern Olympics, the 100 meter dash has been an event since the first Modern Games in 1896.
No Australian athlete competed in the men's or woman's 100 meter dash at the 2008 Games in Beijing.
Usain Bolt from Jamaica is the current worlds record holder and 2008 Olympic gold medal recipient in the 100m dash.
A 12.5-second 100m equates to a time of 4.572 seconds in the 40-yard dash.
The start line from the 100M dash is 100M away from the finish line, parallel to the finish line.