The Kentucky Derby traditionally limits its field to 20 horses. This limit has been in place since 1975, after a record 23 horses ran in the 1974 Derby. Since then, the maximum number of starters allowed each year has been 20, although the actual number of horses competing can be slightly less due to scratches before the race
. For example, in the 2020 Kentucky Derby, although the field could have included up to 20 horses, only 15 actually competed due to several scratches
. Similarly, in the 2025 Kentucky Derby, there were 20 post positions available, but the race featured 19 horses after some scratches occurred
. In summary, the Kentucky Derby typically has a maximum of 20 horses in the race, but the actual number can vary slightly each year depending on last- minute changes.
