Betting on the Kentucky Derby is more popular than ever. So why is it so confusing?
Betting on the Kentucky Derby has reached record levels, with $473.9 million wagered during Derby Week in 2025, yet participation through mainstream sports betting apps remains limited. This is due to Kentucky's legal requirement that horse race betting operate under a pari-mutuel system, which differs fundamentally from the fixed-odds model used in sports betting. The complexity of pari-mutuel wagering and its incompatibility with modern betting platforms creates barriers for casual bettors and major operators alike.
- ▪In 2025, bettors wagered a record $234.4 million on the Kentucky Derby race alone and $473.9 million across Derby Week.
- ▪Kentucky law mandates pari-mutuel betting for horse racing, meaning bettors wager against each other and odds change until the race starts.
- ▪Mainstream sportsbooks like DraftKings and FanDuel cannot offer Kentucky Derby betting on their standard platforms due to separate licensing and technical requirements.
- ▪The dominant platform for legal Derby betting is Churchill Downs’ TwinSpires, designed specifically for the state’s pari-mutuel system.
- ▪A federal law creating the Horseracing Integrity and Safety Authority (HISA) in 2020 sparked a legal battle that nearly prevented legal off-site betting on the Derby.
Opening excerpt (first ~120 words) tap to expand
On the first Saturday of May, 150,000 people will pack into Churchill Downs in Louisville wearing their finest hats. Tens of millions more will watch from home. In 2025, 17.7 million Americans tuned in—the largest Derby audience since 1989.Recommended Video And bettors wagered a record $234.4 million on the race itself: $349 million on the full Derby Day program and $473.9 million across Derby Week, all records for the fourth consecutive year. That’s a lot of betting for a single two-minute race. But for anyone who has tried to bet on the Derby through a mainstream sports betting app, it’s surprisingly hard to get in on the action. That’s because the Kentucky Derby runs on a fundamentally different legal system than the one powering America’s $166.94 billion sports betting boom.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Fortune.
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