Unless one is a trained athlete, a fast person can sprint the 100-meter dash at a speed of 15.9 mph, which takes anywhere between 13 to 14 seconds, according to The Telegraph. Professional athletes are held to a higher standard, and the qualifying time for the London Olympics was 10.18 seconds for the men's race and 11.29 seconds for the women's race.
The fastest that the 100-meter dash has ever been completed is at a record 9.94 seconds by Justin Gatlin, a 31-year-old American sprinter. Gatlin was followed by Usain Bolt, the three-time Olympic champion, who had a time of 9.95 seconds.
