To be honest, I am surprised that this is surprising to you. I have worked and traveled around the world and it is common in every language that I have encountered, even British English. ( I do hold a US and UK passport and I speak, write and teach in both versions of English.) There should be tons of linguistic research on the topic if you just search for it, but it is a very common for phrases or incorrect verbs such as this occur in languages.

By the way, I am originally from North Carolina. I have never said had ran nor would I say it. I never heard it in North Carolina. You can't judge everyone in a state or location by what you have heard one or a few people say.