1400 Guineas Stakes 1400 Guineas Stakes The 1400 Guineas Stakes was a flat horse race in Great Britain open to thoroughbreds aged four years. It was run at Newmarket and was one of the most important races of the second half of the 18th century. The 1400 Guineas was established in 1757 to be first run on the Monday before the first Thursday in October 1758. It was established by the 2nd Marquess of Rockingham, Marquess of Granby, 2nd Earl of Northumberland, 1st Earl of Gower, Sir James Lowther, Thomas Panton and Jenison Shafto. They agreed the race was to be run over
Union Race Course Trotting Park' but the increasing value of the land for housing proved too much. The final horse race was run at Union Race Course on July 18, 1863. The positioning of this race course, as well as the earlier built race course called Pioneer Race Course appear to have affected the placement of the San Francisco-San Jose Railway. Union Race Course Union Race Course was a horse racing track opened in the 1850s in San Francisco, California located in the Mission District. There were two horse race courses in the Mission District at this time, the other being Pioneer Race