Of the three most popular: Orange, Movistar, and Vodafone, which SIM card works best for walking the Del Mar given the seemingly remote looking areas on the route?
The one from Galicia (the round) and the one from Castilla & Leon. Individually numbered and made by the same people that make the ones you see on your walk.
In May 2019, my husband and I walked the Ruta del Cantabrico (coincides/runs alongside the Camino del Mar). We had Vodafone sims and they worked fine as far as I remember. We haven't tried the others.
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