Kroger usually has a decent selection up here in Delaware surprisingly, but you've got to be there when they get their delivery or your SOL. I was able to get some Buffalo Trace recently, but I had a friend find me some Eagle Rare a guy was selling on a Facebook group after a month of running to different stores. Rarer stuff is going to be tough to get.
Best thing to do is find a local distributor and become friends, or find the groups on Facebook to join and keep an eye out for anything you'd like. Might pay a few extra bucks, but it might be worth it instead of waiting and driving all over the place to find it.
*Edit* Four Roses Small Batch and Single Barrel are both very good and seem to be more plentiful.