|Dam||My Sierra Leone|
|Breeder||B. Larry Ryan|
Sir Michael Stoute (Europe)|
John Gosden (United States)
|Royal Heroine is a thoroughbred racehorse out of My Sierra Leone by Lypheor. She was born around 1980 in Ireland, and was bred by B. Larry Ryan.|
Breeders' Cup wins:|
Breeders' Cup Mile (1984)
|American Champion Female Turf Horse (1984)|
|Royal Heroine Mile Stakes at Hollywood Park|
|Horse (Equus ferus caballus)|
|Last updated on 10 July 2008|
Royal Heroine (1980-2002) was an Thoroughbred Champion Filly racehorse foaled in Ireland who raced in England and France and then in the United States where she set a North American for a mile on turf while winning the inaugural running of the Breeders' Cup Mile in 1984.
Bred by Larry Ryan, a chairman of the Irish National Stud, Royal Heroine was out of the mare My Sierra Leone, a daughter of the 1963 Epsom Derby winner, Relko. Her sire, Lypheor, was a son of Lyphard who twice had been the Leading sire in France. Raced by one of the United Kingdom's most prominent horsemen, Robert Sangster, her trainer in Europe was Sir Michael Stoute.
Racing at age two, Royal Heroine won two of four starts including a victory in the Princess Margaret Stakes at Ascot Racecourse. At age three, she won England's Child Stakes at the Newmarket Racecourse and the Prix de l'Opéra at Longchamp Racecourse in Paris, France.
Royal Heroine was sent to race on the West Coast of the United States where she was conditioned by trainer John Gosden. At age four, her career almost ended when she was the third horse in a three-horse accident during the running of the Santa Anita Handicap. Although two horses died and Royal Heroine's jockey Fernando Toro was hospitalized, she came out of the accident with only minor scratches. Recovered, she went on win four major races plus she won the Palomar Handicap but was disqualified to third. 
1984 Breeders' Cup
In winning the inaugural running of the Breeders' Cup Mile at Hollywood Park Racetrack, Royal Heroine defeated a field of nine male horses. Ridden by Fernando Toro, she set a track and North American record for a mile on turf. Her performances in 1984 earned her American Champion Female Turf Horse honors.
According to the British Racing Post, Royal Heroine died at age twenty-two.