5 Olympic sports you should know

 

Athletics is the largest single sport at the Olympics and London 2012 is no exception - over 10 days, 2000 athletes will compete in 47 events. There are four main events - track (includes sprints, long distance, hurdles), field (includes shot put, high jump) combined track and field (decathlon, heptathlon) and road events (marathon and race walks). The United States has dominated this Olympic sport with 738 medals to date.
Photo: Wiki Commons