In April and May 2024 I walked from Santander to La Coruna, 650km with an elevation profile of ca. 15.000m.
I spent 14 days on the Camino del Norte, walking from Santander to A Rochela, where the Norte moves inland towards Santiago, and I stayed on the coast towards La Coruna.
These posts describe the 14 days spent on the Camino del Norte.