The International Federation of Horse Racing Authorities released their first ever list of the top 50 Grade / Group 1 races:
http://ifhaonline.com/resources/2012...0_G1_Races.pdf
http://www.racingandsports.com.au/ra...n_World_Top_50
Keeping in mind I don't mean which are your favorites or where do you want to visit, what would your order look like?
What are the top ten?