Actually, my problem with google maps has nothing to do with the data accuracy. It's more about the process of route planning on a small screen that I still cant get used to.

With paper, I was working with about a square yard or so, which gave me both an overview and some detail at the same time, and it as fairly easy to short list options. Online, I can opt to zoom out to get the overview, but lose details in doing so. If I zoom in, I get great detail, but lose sense of the big picture.

I guess, I could learn and adapt, or find a place where I can access a wall sized screen, but I'm still preferring my old Rand McNally maps, for the early stages of blocking out routes.

BTW - since I was touring by bike before this modern technology, I got into he habit of only blocking out the vague outlines of my plan. I'd ride and navigate by whim, often using local info picked up along the way to tweak or change the plan entirely.