There have been many great achievements made by athletes from all around the world in the London Olympics. More than 200 countries took part in the XXX Olympiad and many countries gained their first medals including Grenada, Cyprus and El Salvador. Millions around the world witnessed Usain Bolt defend his 100m, 200m and 100m relay titles and Michael Phelps became the most decorated Olympian of all time.
London Olympics 2012 and the top 10 super-athletes!
