There aren't any that I know of. The Kentucky Bourbon Trail is a multi-day road trip. It's 3 hours each way from Nashville to the closest distillery on the KYBT (Makers Mark) so it's hard to make it into a day trip.
Try Corsair and Nelson's Green Brier distilleries in Nashville.Edited: 13 June 2018, 04:58
There is a Tennessee Whiskey Trail as well. It's not as organized as the KBT, but it is only about a year old.
I'm not aware of any organized tours, it's pretty well set up as a "do it yourself at your own pace" type of tour. There is a local company called "Barrels of Fun" that specializes in create your own tours in the various distilleries, wineries and brewers. You set up your route and they get you from place to place in a responsible manner.
Thanks! Only problem is they have an 18 person minimum and we only have 8 in our party. Ill contact them anyway.
Thanks. Ill look into "Barrels of Fun"!