BetUS Racebook is the best online off track betting racebook on the planet serving millions of horse-players nation wide. Whether you're padding your bankroll or betting on Triple Crown, BetUS Racebook has all of the horse betting action you require. Log in and wager on Kentucky Derby, Preakness Stakes, Belmont Stakes and Breeders’ Cup for the best track odds, lines and horse-plays on the net. As well as having horse racing from over 50 racetracks across the US, BetUS now offers the best horse racing betting action from over 100 tracks worldwide including Australian, Dubai, English and Hong Kong horse racing. Join now and bet on horse racing without leaving the comfort of your own home! Our horse betting affiliate program is for you.