UltraSwim 33.3

UltraSwim 33.3 – the ultimate open water adventure swimming series – returns to Hvar Island from 15–19 May 2025. The event will kick off in Stari Grad, where the first three days of swimming will take place, before moving to Hvar Town for the grand finale.

Swimmers of all ages from around the world are invited to take part in this extraordinary challenge. Over four days, participants will cover a total distance of 33.3 km, starting from Stari Grad, navigating the northwestern coastline of Hvar and the Pakleni Islands, and finishing in Hvar Town.

The 33.3 km distance mirrors the shortest crossing of the English Channel, widely regarded as one of the ultimate endurance swimming feats. UltraSwim 33.3 offers a rare opportunity to push your limits in one of the most stunning open-water settings in the world.