| Ruthless | |
|---|---|
| Sire | Eclipse |
| Grandsire | Orlando |
| Dam | Barbarity |
| Damsire | Simoon |
| Sex | Filly |
| Foaled | 1864 |
| Country | United States |
| Colour | Bay |
| Breeder | Francis Morris |
| Owner | Francis Morris |
| Trainer | A. Jack Minor |
| Jockey | Gilbert Patrick |
| Record | 11 starts, 7-4-0 |
| Earnings | $11,000 (approximately $240,000 as of 2024) |
| Major wins | |
| Nursery Stakes (1866) Sequel Stakes (1867) Travers Stakes (1867) American Classics wins: Belmont Stakes (1867) | |
| Honours | |
| United States Racing Hall of Fame (1975) Ruthless Stakes at Aqueduct Racetrack | |
Ruthless (1864–1876) was an American Thoroughbred filly and a National Museum of Racing and Hall of Fame-inducted racehorse. She is best known as the winner of the inaugural Belmont Stakes.[1]