At the 2008 Games in Beijing, that was Anastasiya Svechnikova of Uzbekistan who was 15 years, 334 days old when she competed in women's javelin throw.
The youngest athlete whose age can be documented that ever competed in athletics at the Olympics is Céléstine N'Drin of Ivory Coast who was 13 years, 3 days old when she competed in women's 800 meter run at the 1976 Games in Montreal.
Depends what Track and Field event you are talking about. But the fastest man in track in field is Usain Bolt. He ran the 100 meter dash in 9.69 seconds setting a new world record.
Track Town USA! Out in Oregon
track and field
Eugene Oregon
track and field
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trac and field
The track and field athletics events are being held at the Olympic Stadium, Olympic Park, Stratford, London E20 2ST
Carl Lewis was an American track and field athlete who won 10 medals in Olympic competition.
It is one event in the sport Track and Field.
Track and Field
Hurdles -------------------- Men's 100m