Horse racing isn’t just a sport you watch — it’s a market you participate in. Prices move. Opinions collide. Money reshapes probability in real time. This horse racing betting guide breaks down how the market works. Prices move. Opinions collide. Money reshapes probability in real time. If you’ve ever asked yourself how does horse racing betting work, the answer is in how races are built, how betting pools operate, and why the odds — the price that determines your potential payout — matter more than simply picking the winner.