Have you ever looked at a racecard and wondered how horse racing odds are calculated? Whether you're new to the sport or have been following racing for years, it's a question many fans ask. While horse racing odds may seem complicated at first, they're simply a way of showing how likely a horse is to win a race. In this guide, we'll explain how bookmakers calculate horse racing odds, what influences them, and why they change before the race starts. How Horse Racing Odds Are