Gran Premio Diamante

The Gran Premio Diamante (previously known as the Gran Premio Mil Guineas) is a Group 1 horse race in Argentina run over 1600 meters on the turf at Hipódromo de San Isidro. It is restricted to three-year-old fillies and is based on the British 1000 Guineas Stakes.

It is the first leg of the San Isidro Filly Triple Crown.

History
The Gran Premio Diamante was first run in 1980 as a Group 2 race before being upgraded to a Group 1 race in 1982.

In 2024, the race's name was changed from the Gran Premio Mil Guineas to the Gran Premio Diamante.

Records since 1988
Speed record:


 * 1:33.30 – Polvorada (2021)

Largest margin of victory:


 * 9 lengths – Giuliet Seattle (2017)

Most wins by a jockey:


 * 3 – Jacinto Rafael Herrera (1992, 1997, 2000)
 * 3 – Jorge Valdivieso (1995, 1999, 2006)
 * 3 – Juan Carlos Noriega (1996, 2005, 2007)
 * 3 – Pablo Gustavo Falero (2003, 2008, 2014)
 * 3 – Adrian M. Giannetti (2010, 2012, 2023)

Most wins by a trainer:


 * 8 – Carlos D. Etchechoury (1995, 1999, 2001, 2004, 2008, 2015, 2022, 2023)
 * 4 – Roberto M. Bullrich (2006, 2011, 2013, 2018)

Most wins by an owner:


 * 5 – Haras La Biznaga (2006, 2009, 2011, 2013, 2018)
 * 3 – Haras Orilla del Monte (1998, 2001, 2004)
 * 3 – Haras Santa Maria de Araras (1999, 2008, 2014)

Most wins by a breeder:


 * 5 – Haras La Biznaga (2006, 2009, 2011, 2013, 2018)
 * 4 – Haras Santa Maria de Araras (1999, 2008, 2010, 2014)
 * 3 – Haras Firmamento (2002, 2005, 2017)