Good luck on that one! As you walk through tranquil green quiet beautiful Galicia the pastoralatmosphere is broken only by the occaisional but incessant horn blowing of small delivery vans. One is the daily arrival of the traveling fish monger and do stop by there is everything from octopus to fresh hake in the back of those vans. The other is bread van which usally comes around twice a day chock full of baguettes, batards, whole wheat and white breads all chiock full of gluten. I have never checked but I seem to remember seeing gluten free in the supermarkets of larger towns so consider stiocking up in Sarria, Portomarin, Palas de Rei, Melide, Aruza, Arca, and Santiago. Do be careful with the pilgrims menu-vegatable soup (usually meat based) may be thickened with bread, meatballs of course, fried fish, and know that many servers will have no idea what is in the food or even what a Ceoliac might be.
S