The Caulfield Guineas is a set-weights race for three-year olds, run over 1,600 metres at Caulfield Racecourse. It is only bettered by the Caulfield Cup itself as the premier race during the Caulfield Cup Carnival.  

A race with a history that dates back to 1881, the Caulfield Guineas has now established a reputation of being a stallion-maker race.

In other words, male horses that have not only won but run well in this race have become champion sires in their post-racing careers. Lonhro and Redoute's Choice both triumphed in the Guineas, and they have gone on to become two of Australia's most famous sires, with their progeny having successful racing careers to this day.

The Caulfield Guineas has always been run over the distance of a mile. This is part of what makes the Guineas such a great race. Three-year-olds that can step up in distance and win at 1,600 metres earmarks the horse as a quality animal, and why so many Caulfield Guineas winners are sent to stud. 

Run on the second Saturday in October, the Caulfield Guineas is part of one of the best days on the Australian racing calendar. Three other Group Ones, including the Thousand Guineas- the Caulfield Guineas equivalent for fillies- is also run at the meet. And in recent years, this day has become even better with the introduction of the Everest up in Sydney.

Caulfield Guineas day also marks the start of four weeks of the highest calibre of racing. The Guineas is followed by the Caulfield Cup a week later, then the Cox Plate, and the Flemington carnival.