Arlington International Racecourse | 1,105 followers on LinkedIn. Live Racing & Entertainment Returns May 2020 | Described as "the most beautiful track in America"​, Arlington began Thoroughbred racing on October 13, 1927, when more than 20,000 fans braved the cold weather to celebrate the event in high style. Since then, Arlington International has become a social destination and perfect summer hangout to watch and wager on the amazing sport of Thoroughbred horse racing! Arlington offers beautiful venues for everything from corporate outings to reunions to weddings, and it's the ideal spot for groups of friends to catch-up, watch the ponies and meet new people.