100 metres

The 100 metres is a track sprint race run over 100 meters, usually on a straight track. It is the shortest standard outdoor sprint and is decided by the order athletes cross the finish line.

Sprint start: The starting procedure in a sprint, from the set position through the first strides. A reaction to the starting signal launches every 100-metre race.
Usain Bolt: A Jamaican sprinter who set the men's 100-metre world record of 9.58 seconds in 2009. His Berlin performance remains the event's world-record mark.
200 metres: A track sprint race covering 200 meters, usually beginning on a bend and finishing on a straight. It extends the sprint distance and adds a curve to the race.
Athletics at the 1896 Summer Olympics: The track and field competitions held at the first modern Olympic Games in Athens. The men's 100 metres was among the inaugural Games' track events.
Starting blocks: Adjustable foot supports used by sprinters to push off from a crouched start. They provide the stable, angled push used at the 100-metre start.
Florence Griffith-Joyner: An American sprinter who set the women's 100-metre world record of 10.49 seconds in 1988. Her record is the benchmark in the women's event.
60 metres: A short indoor sprint race covering 60 meters on a straight track. It emphasizes acceleration more than the 100 metres does.
Professional foot racing: Organized competitive running in which athletes raced for prizes or wagers. Professional sprint contests preceded the modern amateur and Olympic event.
False start: A start in which an athlete begins motion before the starting signal, violating race rules. A false start can disqualify a 100-metre competitor before the race unfolds.
Ben Johnson: A Canadian sprinter whose 1988 Olympic 100-metre victory was annulled after a positive doping test. The Seoul race became a defining case in the event's doping history.

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