The Prix Belle de Nuit is a Group 3 flat horse race in France open to thoroughbred fillies and mares aged three years or older.
It is run at Saint-Cloud over a distance of 2,800 metres (about 1¾ miles) each year in October or November.
[1] At this time it was classed at Listed level, and for a period it was restricted to three-year-olds.
[3] The upper age limit was removed in 1994, when the race was temporarily switched to Saint-Cloud.
For several years thereafter the Prix Belle de Nuit moved to various venues.