Could it be the Olympics.
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The Olympic Games is an international sporting event for both summer and winter sports competitions. This features athletes from all over the world competing against different countries every four summers and winters.
You may be able to get some discount sporting event tickets on Stubhub. They usually have tickets for just about every major event.
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 Olympics.
Commonwealth Games
French open
The Bolder Boulder sporting event is a race. This race takes place every year in the USA on Memorial Day. There are also events that one can check out after the race.
Australian Open - Tennis
those are called the Olympics
It is a triennial event. A triennial event happens three times a year.