The city is known for its amazing beaches, but the green environment that surrounds it is one of its best-kept secrets. The St. James's Way (Camino de Santiago) stretch that crosses San Sebastian, suitable for all the family, is the best example. Hike it to San Pedro (Pasaia in Basque language), a little and lovely fishing village that will delight your eyes. Cross mt. Ulia on your way, with astonishing viewpoints of San Sebastian and the bay of Pasaia, including mt. Ulia's lighthouse.
A good local pintxo is included to restock on energy! And, of course, you'll be taken care of on the return trip: a car will be waiting for you after the hike is done, to take you back to San Sebastian.
Approximate itinerary:
9:00 Departure from San Sebastian
9:20 Route through Mount Ulía heading to San Pedro
12:30 Arrival in San Pedro, walk through the area and round of pintxo and drink
14:00 Drop off in San Sebastian