Horse riding is considered the biggest gambling portal in the world. As such, many multi-millionaires have taken a special liking to this sport. And here's the list of the biggest and most attractive races from all across the world. 7. The Breeder's Cup /Prize Money: $1 million 6. Paris Prix de l’Arc de Triomphe/Prize Money: $5.4 million 5. The Kentucky Derby/Prize Money : $2 million 4. Nakayama Grand Jump/Prize Money: $1.7 million 3. The Grand National/Prize Money: $1.6 million 2. Belmont Stakes/Prize Money: $1.5 million 1. The Preakness Stakes/Prize Money: $1.5 million
