Horseracing

6 clues
Sport of Kings
Sport with betting
Street Sense's sport
Sport for 2000+ years
Sport for some 3-year-olds
Belmont activity (and two kinds of cars)
Similar answers:
Adeadhorse
Adrockinghorse
Ahorse
Ahorseofanothercolor
Ahorsewithnoname
Alittlehorse
Allembracing
Allthekingshorses
Amancalledhorse
Amonthorseason
Andwantstohorsearound
Anhorse
Artbeforethehorse
Atelikeahorse
Autoracing
Backthewronghorse
Bayhorse
Beatadeadhorse
Beatahorse
Beatsadeadhorse