Prix du Jockey Club initially 2,500 metres, and this was cut to 2,400 metres in 1843. It was switched to Versailles during the Revolution of 1848, and it was cancelled due to the Franco-Prussian War in 1871. The race was abandoned in 1915, and for three years thereafter it was replaced by the Prix des Trois Ans. This took place at Moulins in 1916, Chantilly in 1917 and Maisons-Laffitte in 1918. The first two runnings after World War I were held at Longchamp. A substitute race called the Prix de Chantilly was run at Auteuil over 2,600 metres in 1940. The Prix du Jockey
Maryland Jockey Club interruption by the U.S. Civil War. Maryland Governor Oden Bowie and others attended that Saratoga meet and devised the Dinner Party Stakes (now called the Dixie Stakes) for a track in Baltimore. In September 1869, the first Maryland State Fair was held at Pimlico Race Course. The present site of the Maryland Jockey Club was opened at Pimlico on October 25, 1870. A new corporation (Pimlico) was organized on May 14 of that same year in a ballroom of the Barnum's City Hotel in Baltimore. Governor Oden Bowie was elected its first President. The first stakes race held at the