There are 16 states (dark green) that have derbies named for them, one (light green) that still has the race under another name and 15 (red) that used to have them. The other 18 (blue) never had such a race. (MapChart.net graphic)
Louisville, Ky.
There is only one Derby, right? After the Kentucky Derby, there is no other. At least not with the colloquial capital letter.
But there are plenty of other derbies with states in their names, and they are popping up with regularity now. The Ohio Derby was last Saturday. The Iowa Derby is Friday. (Give me Rightandjust at a price.) The Indiana Derby rolls around Wednesday. (I like Fulsome to run his winning streak to four.)