
Photo source: www.openwaterswimming.com
If you’re a traveler with a love for the sea and endurance adventures, Croatia’s UltraSwim 33.3 should be on your radar. This unique open-water swimming event, held annually off the stunning coast of Hvar Island, offers not just a challenge but an unforgettable travel experience—whether you’re a competitive athlete or an adventurous spirit in your 70s.
The event covers 33.3 kilometers of crystal-clear Adriatic waters, stretching between Stari Grad and Hvar Town. But what truly makes this event inspiring is its inclusivity. Participants have ranged from 14 to 75 years old, proving that age is no barrier when it comes to embracing the sea. In fact, in recent editions, swimmers in their 70s have proudly completed the challenge—some returning for multiple years!
While official records haven’t confirmed a specific 73-year-old participant, it’s clear that swimmers in that age range are not only welcome but celebrated. The supportive atmosphere, safety arrangements, and breathtaking coastal scenery make it a rewarding experience for both experienced open-water swimmers and age-defying adventurers.

This isn’t just a race—it’s a journey. Swimmers are treated to a multi-day event that combines physical endurance with cultural exploration. From the cobblestone streets of Hvar Town to the serene beaches and historic charm of Stari Grad, the setting is as memorable as the swim itself.
For those who draw inspiration from remarkable stories, you might recall Otto Thaning, a 73-year-old heart surgeon from South Africa, who swam the English Channel—a 34+ km feat—proving that even the toughest open waters can be conquered later in life.
So, if you’re a traveler with a passion for pushing your limits—or simply witnessing inspiring feats—UltraSwim 33.3 in Croatia offers the perfect mix of adventure, beauty, and boundless human spirit. Whether you’re swimming or cheering from the sidelines, it’s a travel story worth being part of.