The Olympic Games, which takes place every four years.
The London 2012 Paralympics
It is the biggest sporting event.
The Kentucky Derby
soccer the fifa world cup
the european champions league
Olympics, College, High School Athletics!
The Olympics involve every country, so people from every country tune in to watch whatever sporting event they are interested in. E.g. 100m Sprint, Archery.
The biggest individual sporting event in Ireland is the All-Ireland Senior Football Championship Final. It is the biggest event for Gaelic Football, one of Ireland's two main national sports. The other is Hurling. It also has an Ireland Final, which is also a major sporting event. The All-Ireland Hurling Final usually takes place on the first Sunday in September and the All-Ireland Football Final usually takes place on the third Sunday in September.