We spent a fortune experimenting with socks before the Camino and took several different pair with us. The best for us was a brand called WrightSock from REI. Tried the liners, but they weren't helpful in July.
The worst one we stayed at was the 'free' albergue at Foncebedon. I've read several books about the Camino, and they also mentioned how bad that one is. Dirty and cramped.
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