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
1,000 Guineas Trial Stakes trial for the 1,000 Guineas Stakes. The last horse to win both events was Full Dress in 1969. The equivalent race for colts was the 2,000 Guineas Trial Stakes. 1,000 Guineas Trial Stakes The 1,000 Guineas Trial Stakes was a flat horse race in Great Britain open to three-year-old thoroughbred fillies. It was run over a distance of 7 furlongs (1,408 metres), and it was scheduled to take place each year in early April. The event was originally held at Ascot. The present grading system was introduced in 1971, and the race was classed at Group 3 level. It was