The Derby, on the other hand, is open to all qualifying colts, geldings, and fillies. While non-male horses can participate in the Kentucky Derby, they are an exception in the sport. Colts and geldings generally weigh 126 pounds, while fillies often weigh 121 pounds. The two races are also varied in length. The Derby is three miles (4.8 km) while the Oaks is 1 1/4 miles (2.4 km). The term "derby winner" is used almost exclusively to describe the winner of the Kentucky Derby. However, there are other important races held throughout the year that merit consideration as well. For example, even though it is not considered the winner's race, many experts consider the Preakness Stakes to be the most important race of the year for 2-year-olds. This fact is evidenced by the large field of candidates every year trying to unseat the derby winner. Similarly, although not as prestigious as the Derby or the Oaks, the Fawcett Cup is another important race for 3-year-olds. This race was first held in 1872 and has been run annually ever since then. The only exception was in 1945 when there was no third race because of World War II. Even though these other races do not have the same prestige as the Derby or the Oaks, many top horses try to win them too.