Icelandic Open Water Swimming Championship — Nauthólsvík Reykjavík

Swimming in the Nauthólsvík bay is a negotiation with the cooling influence of the North Atlantic and the deliberate engineering of a geothermal oasis. As you enter the water, the transition from the heated lagoon to the open sea provides a tangible shift in density and temperature, a sensation familiar to those who track the seasonal ebb and flow of the tide. The seabed here drops away with a steady, predictable gradient, typical of a glaciated coastline, while the water itself holds the deep, steel-grey clarity characteristic of subarctic currents. It is a landscape shaped by ancient geological violence, yet experienced now in a state of suspended calm.

A skyline of history and fire

From your position in the water, the horizon is dominated by the silhouette of the Öskjuhlíð hill, a remnant of a shield volcano that once stood as an island when sea levels were significantly higher. Looking landward, your navigation is punctuated by the Perlan water tanks, whose glass dome acts as a modern beacon atop the old volcanic ridge. The view northward is anchored by the imposing mass of Mount Esja, a constant, dark presence that helps maintain your orientation throughout the race.

This bay holds deeper layers of human narrative that intersect with your path. According to the Landnámabók, this very coastline was where the first Norse settler, Ingólfur Arnarson, finally brought his high-seat pillars ashore after years of searching, marking the birth of the city. Centuries later, the same waters served as a strategic threshold during the World War II occupation, when Allied warships anchored in the bay and the surrounding hills were fortified with bunkers that still remain visible to the observant swimmer. The Icelandic Open Water Swimming Championship, organized by the Sundsamband Íslands, embraces this convergence of history and geography. Held annually in late July, the event utilizes the unique thermal infrastructure of the beach to manage the cold, ensuring that the race remains a test of endurance rather than a battle against hypothermia.