I didn't do the Fontecha Berantevilla stretch of GR1 earlier in the year because I couldn't find anywhere to stay on the route. Instead I got a lift from Fontecha to Medina de Ebro and then a taxi to Berantevilla next day. I wanted to see what this stretch of walking was like and if it was worth doing. Instead of Medina de Ebro, which wasn't a particularly nice place, I wanted to try Vitoria-Gasteiz.
I'd stayed the night before in Bilboa and had been there just long enough to work out where everything was and conclude that it's definitely worth a return visit with Christine. It would be an excellent place to tack onto the beginning or end of some GR1 walking.
From Bilboa I went to by bus to Vitoria-Gasteiz which, with a lovely medieval core is much nicer than Medina de Ebro. It's where Wellington beat the French in the final battle of the Peninsula War, a victory which lost some its sparkle when the British troops, instead of pursuing their enemy, went on a drinking binge.

