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The Triple Tiara of Thoroughbred Racing, formerly known as the Filly Triple Crown, is a set of three horse races in the United States which is open to three-year-old fillies. Presently the only official Triple Tiara is the three race series in New York; they are: The Acorn Stakes, run at Belmont Park at a distance of 1 mile, The Coaching Club American Oaks, run at Saratoga Race Course at a distance of 1⅛ miles and The Alabama Stakes, also run at Saratoga at a distance of 1¼ miles.