It is run over a distance of 1,800 metres ( about 9 furlongs ) at Longchamp in September .
The Prix Bertrand de Tarragon is a Group 3 flat horse race in France open to thoroughbred fillies and mares aged three years or older .
Prix Bertrand de Tarragon is run over a distance of 1,800 metres ( about 9 furlongs ) at Longchamp in September .
The Prix Bertrand de Tarragon is a Group 3 flat horse race in France open to thoroughbred fillies and mares aged three years or older .