I'm on my third trip to northern Spain and I've covered part of the Basque Country. There's a bit of a blog about my 2018 trip here
forum/topic.php?t=17115 All the photos have disappeared with some of the changes we went through. I'm in the French Pyrenees at the moment but I'll be back in Spain after a 2.5Km drive in the morning, probably spend tomorrow night in Jaca, unless of course another road looks more interesting. Are you looking for anything in particular such as Aires, driving routes, nice places ? Throw out a list of questions and between us all we'll get you a few answers. Good luck with the trip and don't forget the one important word.....ENJOY.