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The problem is the first day, uphill, all the way to Roncesvalles. It's also the fact that there aren't air-conditioners in many Albergues. Too hot to sleep and too hot to walk......go later in the year.
We hired a car post-Camino and drove South-West to Sanxenxo. There's a lovely place right on the beach called Casa Aurora. We swam, paddle-boarded and rested by the ocean. It was great to 'debrief' about the Camino while still in Spain.