Chester Racecourse, also known as the Roodee, is a racecourse located in Chester, England. The horse racing venue is officially recognised by Guinness World Records as the "oldest racecourse still in operation". Horse racing in Chester started in the early sixteenth century, with 1539 cited as the year racing began, although some sources give a date of 1512 for the first races in Chester. It is also thought to be the smallest racecourse of significance in England at 1 mile and 1 furlong (1.8 km) long.