On Derby Day at Epsom Downs Racecourse (UK), there are seven races scheduled, including the main event, The Betfred Derby

. For the Kentucky Derby at Churchill Downs (USA), the day features the Kentucky Derby race itself plus a 14-race undercard lineup, totaling 15 races on the card

. So, depending on which Derby you mean:

• Epsom Derby Day: 7 races

• Kentucky Derby Day: 15 races (1 main race + 14 undercard races)