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With one week available to you, I would suggest the most beautiful week of all caminos, that is from Bilbao to Santander. I've just returned from there on Sunday last and flew out to Bilbao on Tuesday of last wee, so took six days, including flight travel. I've walked 5 of the caminos, this is...
I can easily agree with the previous reply, while adding that if a compostela is sought, you might consider starting from the absolutely beautiful and historic city of Lugo and walk to Santiago from there, being just over 100km.
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