| Grade II race | |
| Location | Belmont Park Elmont, New York, United States |
|---|---|
| Inaugurated | 1980 (as Kelso Handicap at Aqueduct Racetrack) |
| Race type | Thoroughbred – Flat racing |
| Website | NYRA[dead link] |
| Race information | |
| Distance | One mile |
| Surface | Dirt |
| Track | Left-handed |
| Qualification | Three-year-olds and older |
| Weight | Base weights with allowances: 4-year-olds and up: 126 lbs. 3-year-olds: 122 lbs. |
| Purse | $350,000 (since 2023) |
The Forty Niner Stakes is a Grade II American Thoroughbred horse race for three-year-olds and older run over a distance of one mile (8 furlongs) on the dirt held annually in late October at Belmont Park in Elmont, New York. The event offers a purse of $350,000.