27 countries and 74 athletes participate in the Modern Pentathlon.
216 countries will participate in 2012 Olympics.....
4,000,000 atletes and 4,000 countries will participate
71 Countries will participate in the 19th commonwealth games.
Sixteen countries shall participate in the UEFA Euro 2016 tournament.
An all round athlete who is good at several events
12
76
204 countries
I believe it was 11 countries...
82 countries
147
12