UltraSwim 33.3 Greece

Gliding through the Aegean, the silence of the water is broken only by the rhythmic stroke of your arms and the distant, sharp cry of an Eleonora's falcon circling the craggy cliffs above. Looking shoreward, the island of Skopelos reveals its true scale: a mountainous, saxophone-shaped silhouette where the peak of Delphi rises to 681 meters, casting a long, imposing shadow over the channel. This is the heart of the UltraSwim 33.3 Greece, a four-day endurance challenge that demands as much mental fortitude as physical power. Beneath you, the depths shift from turquoise to an intense, ink-like blue, a reminder of the rugged underwater topography where the island's steep slopes plunge directly into the sea.

This landscape is steeped in a timeline that long precedes modern swimming. As you navigate the coastline, you are effectively tracing the same waters that supported a thriving wooden shipbuilding industry, an heritage that once saw nearly every local family own and operate their own sailing vessel. The history here is visceral; in the area of Staphylos, the sea hides the remnants of a Mycenaean royal tomb, an archaeological landmark from the Late Bronze Age that anchors this island in ancient history. You might even catch a glimpse of the elusive Mediterranean monk seal, a protected inhabitant of the Northern Sporades National Marine Park, which finds sanctuary in these pristine, secluded bays.

Race day logistics

Participation in this 33.3km odyssey comes with a logistics structure designed to support you across the multiple daily stages. With a standard entry fee of 1794 EUR, the event provides essential race-day support including boat escorts, post-swim nutrition, and daily logistics to manage the coastal transitions. The September timing is strategic, chosen to coincide with the most stable water conditions of the year. While you may feel the weight of the distance, the event structure—which builds from 4km daily legs toward a marathon-distance stage—is designed to foster a collective rhythm within the group. The finish line is often as much about the shared journey as the individual achievement, mirroring the resilience of the island’s patron, Saint Riginos, whose 4th-century martyrdom is still honored annually by the local community. For those seeking a different pace, the calendar also features the upcoming 2027 edition, providing another opportunity to tackle these Aegean waters. Every swimmer receives a comprehensive kit, including a towel, a custom water bottle, and an upcycled medal, serving as a tangible record of the miles covered along these historic, pine-fringed shores.