The Irish Derby is a prestigious horse race held annually in June at the Curragh Racecourse in County Kildare, Ireland. It is one of the most important flat races in the world and is part of the European Classic series. The race is open to three-year-old thoroughbreds and covers a distance of one mile and four furlongs. Established in 1866, the Irish Derby has a rich history and attracts top horses, trainers, and jockeys from around the globe. The event is known for its competitive field and significant prize money, making it a highlight of the Irish racing calendar.