The Sussex Stakes is a prestigious flat horse race held annually at Goodwood Racecourse in West Sussex, England. It typically takes place in late July and is open to three-year-olds and older thoroughbreds. The race covers a distance of one mile and is part of the British Champions Series. Established in 1841, the Sussex Stakes has a rich history and is known for attracting top horses and trainers. It is often regarded as one of the key mile races in the UK, contributing to the reputation of the Goodwood Festival as a highlight of the racing calendar.