The 0.1 second interval accounts for the sum of the time it takes for the sound of the starter's pistol to reach the runners' ears, and the time it takes for a human to react to it.įor many years a sprinter was disqualified if they were responsible for two false starts individually. A reaction time less than 0.1 seconds is considered a false start. The time between the gun and first kick against the starting block is measured electronically, via sensors built in the gun and the blocks. The starter will keep the sprinters in the set position for an unpredictable time of around two seconds and then fire the starting gun. Masters 100 metres Dash All-Time World RankingsĪt the start, some athletes play psychological games such as trying to be last to the starting blocks, although direct intimidation would be considered unsporting. On an outdoor 400 m running track, the 100 m is run on the home straight, the start being set on an extension to make it a straight line race. Indoors events are normally held over 60 m (sometimes 50 m or 55 m) as few facilities have a 100 m indoor straight. The reigning 100 m Olympics Games Champion is often named "the fastest man/woman in the world".Ī distance of 100 yards (91 m) was often run in the past, but this is now obsolete. 100 metres Dash (one hundred metres) is the shortest outdoor sprint race distance in athletics.
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