8
Shane has been on YouTube since 2008 (so, 2 years).
Sanya Richards Ross has been in the Olympics for FOUR YEARS.
The gymnastics has been in the Olympics since 1896.
For 14 years
Shaun White has been is the Olympics for 3 years.
15 Years.
Figure skating has been part of the olympic games since 1908, where it was first part of the summer Olympics. In 1924, it was first introduced to the winter Olympics. Your question does not specify which Olympics, but it was in the summer Olympics 102 years ago. It has been in the winter Olympics for 86 years, and been in all 21 winter Olympic games since then.
Millions of years
100 years
16 years
He's been swimming since he was three but he has been non stop training for the Olympics since 2000. That was four years before the Olympics in Athens. So technically Michael Phelps has been training eight straight years for the 2008 Olympics in Beijing.
It has been held for thousands of years.