Iaaf-ratified world record progression for the men's 100 m.
In 1977 the iaaf began requiring fully automatic timing, accounting for both the increase in measured times and the decrease in.
The 100 metres, or 100-meter dash, is a sprint race in track and field competitions.
The shortest common outdoor running distance, the 100-metre (109. 36 yd) dash is one of the most popular.