High Quality Content by WIKIPEDIA articles! The Matron Stakes is an American Thoroughbred horse race once held annually during the second week of September at Belmont Park in Elmont, Long Island, New York, but is now a Spring/Summer event along with the Futurity Stakes. Open to two-year-old fillies, it is contested on dirt at a distance at seven furlongs. It is a former Grade I stakes but since 2007 has been a Grade II event. In effect, it is a filly counterpart to the Belmont Futurity Stakes.