Strongman All Japan Triathlon

The Strongman All Japan Triathlon is an endurance competition held on Miyako Island where athletes swim 3 kilometers in the East China Sea, cycle 155 kilometers, and complete a 42-kilometer marathon run. The course takes participants through the island's natural coastal landscape, combining three distinct disciplines into one demanding event.

The competition began in 1984 with 243 participants and grew into one of Japan's largest long-distance triathlon events. Today the event is limited to approximately 1500 athletes per year to maintain quality and safety standards.

The competition features a monument in Miyakojima where ceramic plaques display the names of previous winners, preserving the legacy of this athletic event.

The event takes place each April, and participants should prepare for variable conditions on the water and roads. Registration opens several months in advance through the official website, where competitors can also find guidance on accommodation and travel arrangements.

In years with severe weather, organizers have run the event as a duathlon format without the swimming segment. This shows how the event adapts to the unpredictable conditions of the island setting.

Location: Okinawa Prefecture

GPS coordinates: 24.73987,125.26072

Latest update: December 11, 2025 18:06