Prix Dollar in 1957, and extended to 2,250 metres in 1958. It reverted to 2,000 metres in 1960, and was held at Chantilly in 1965 and 1966. A new distance of 1,950 metres was introduced in 1969. The Prix Dollar was run at Chantilly's Prix du Jockey Club meeting over 2,000 metres in 1986. It was switched to Longchamp's late September fixture in 1987. It was opened to three-year-olds and moved to the Saturday of Prix de l'Arc de Triomphe weekend in 1988. The latter race is traditionally held on the first Sunday of October. Prix Dollar The Prix Dollar is a
Prix du Moulin de Longchamp when the racecourse was built in 1856. The Prix du Moulin de Longchamp was one of two major races introduced to celebrate Longchamp's centenary in 1957. Both initially took place on the first Sunday in October, the same day as the Prix de l'Arc de Triomphe. The other race, the Prix de l'Abbaye de Longchamp, is still held at that meeting. The Prix du Moulin was moved to late September in 1974, and to the first Sunday of that month in 1980. It was formerly contested on Longchamp's middle course (the "moyenne piste"), but was switched to the main course