Do you have to be a certain age for the Olympics?

http://www.cbc.ca/sports/brown/2008/01/olympic_age_minimums_not_alway.html

( at least 16 for all sports, some, such as Marathon, (20) are higher)

I think the minimum age requirement to join Olympic game is 16 and up. But still depends on what sports they are competing. There are some Junior and Senior Division if needed.