Derby odds represent the probability of a horse winning a race, particularly in prestigious events like the Kentucky Derby. These odds are determined by various factors, including the horse's past performance, jockey experience, and track conditions. They fluctuate leading up to the race as bettors place wagers, reflecting public sentiment and expert analysis. Lower odds indicate a higher likelihood of winning, while higher odds suggest an underdog. Understanding these odds is crucial for bettors looking to make informed decisions and maximize their potential returns on race day.