Cantabria has the following sub-regions:
Arrival by car from Bilbao is via the A8 freeway.
Since many interesting places are outside the main city Santander in small villages in the country side a car is recommendable. Alternatively public buses are available to larger towns. Frequent public buses are available between Santander and Bilbao.
You can surf at the beaches of Somo, Los Locos in Suances near Torrelavega and Meron near San Vicente de la Barquera.