Between Comillas and San Vicente de la Barquera!
Oyambre Beach is located on Cantabria's western coast only a few kilometers from the villages of Comillas and San Vicente de la Barquera.
It’s a fairly large beach (almost 2 km.) found in the Oyambre Natural Park. The combination of the fine white sand and extensive vegetation of the park makes it a place really worth visiting.
What I found most unusual about it is that it's very popular and even crowded even though it's somewhat hidden off the beaten path and the access ways are in poor shape.