Answer varies. Depends where you live. No one really knows what is the most famous sporting event in the world. I would say the Olympics.
Today the most famous one is the Olympic Games. However, there was also the Marathon, and, on a less mainstream level, the Spartathlon (a race from Athens to Sparta.)
the crossfit games
The Sydney to Hobart Yaght race.
Formula 1 Grand Prix
The summer olympics
the soccer world cup
The Iron man competition
world cup football
The sporting event that is held annually at the Pine Mountain Resort is called the Pine Mountain Ski Jump. It is hosted by the Kiwanis Ski Club. It began in 1937.