XI Travesía La Sardina 2026 — Santurtzi

Legend speaks of English monks who, fleeing religious persecution, found refuge in the Somorrostro Valley and established a monastery that would eventually seed the town of Santurtzi. This historical origin story lingers in the local identity, much like the presence of the 'Sardinera' monument erected in 1964—a stone tribute to the women who once carried the day's catch from the port to the markets of Bilbao. For those entering the water, this connection to the sea is not merely a memory, but a lived experience in the Santurtzi harbor and the surrounding estuary.

The estuary and the horizon

As you navigate the Nervión River, you are crossing a channel fundamentally reshaped by the engineering vision of Evaristo Churruca. His work, which successfully tamed the historically treacherous Portugalete sandbar, defines the current water flow and the environment for the 11km main event. While you push through the mouth of the river, look toward the horizon to spot the Vizcaya Bridge, a towering UNESCO World Heritage site that serves as an unmistakable marker for those heading toward the bay. The geological backdrop is equally imposing, with the Mount Serantes rising 452 meters over the coastline. Its slopes and the distinct ridges known as The Mallet dominate the view, providing a constant reference point as the swim transitions from the river into the open waters of the Bay of Biscay.

Race day logistics

The XI Travesía La Sardina 2026, scheduled for July 11th, maintains a strong link to the regional swimming circuit. If you are looking for local competition, you might find your rhythm earlier in the season at the 83rd Club Deportivo Bilbao Crossing, which provides a different pacing in early June. The main 11km event serves as a significant stop on the Spanish Open Water Cup, known as the TOUR 500, requiring swimmers to navigate the coastal relief characterized by Cretaceous-period Urgonian limestone that slopes toward the estuary. Whether you are tackling the 700m school race within the port or the longer point-to-point distances, the event remains a study in navigating the currents of a historic industrial artery that now hosts a growing community of open water enthusiasts.