1400 Guineas Stakes the Beacon course at Newmarket and would be open to four-year-old colts and fillies. They paid a 200 guineas subscription each to enter their horse. Colts would carry 8 st 7 lb and fillies 8 st 4 lb. The race was initially to be run for five consecutive years from 1758, but was subsequently renewed in 1763. The weights were changed in 1768, with colts carrying 8 st 10 lb and fillies 8 st 7 lb. The race was discontinued after 1782 and a similar race was started for three-year-olds in 1784. 1400 Guineas Stakes The 1400 Guineas Stakes was
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