The meters in which  Zhang Yingying qualified forAt only 18 years  is one of the track event for which game
Zhang Yingying:  At only 18 years she already qualified for the 2008 Summer Olympics to represent China at the 5000 metres, 10,000 metres and the marathon. 5000 metres:  It is one of the track events in the Olympic Games and the World Championships in Athletics, run over 12.5 laps of a standard track.
Olympic Games