HomeHorse Racing Horse Racing & Parimutuel Betting Online Written by George Owens · Fact-checked by Vanessa PhillimoreLast updated: Oct 3, 2026 Parimutuel betting pools all wagers on a race and pays winners from that pool after the operator’s commission. It powers online horse racing betting (advance-deposit wagering) and historical horse racing games in many states. Kentucky DerbyOdds, contenders and how to betPreakness StakesThe second leg of the Triple Crown Horse racing betting sitesComing soon