HALF IRONMAN Phu Quoc Vietnam—a race where the ocean becomes your playground and the island's beauty sets the stage for an unforgettable triathlon experience. Swim: Immerse yourself in the crystal-clear waters of Phu Quoc's Three Coconut Tree Beach, where the 1.9km swim awaits. With an average water temperature of 84.2°F / 29°C, the ocean welcomes you to a rolling start. Picture yourself gliding through the gentle waves, following a triangle-shaped swim course in an anticlockwise dance, ...