What is the difference between the olympic games and the pan american games? i think its c a; the pan american games are held every 6 years while the olympic games are held every 4 years. b: the pan american games are held in buenos arias, argentina, while the olympic games are held in cities all over the world. c. only countries in americas and caribbean participate in the pan american games while the olympic games are international. d. the pan american games do not allow professional athletes to compete while the olympic games do.