HALF IRON Bangsaen, Thailand—an extraordinary event that seamlessly blends awe-inspiring landscapes, and diverse terrains. Swim (1.9km): Begin your journey with a unique rolling start from sandy shores, adding an extra layer of excitement to your race. The 1.9km swim takes you on a clockwise, triangular course through the warm, azure waters of Bangsaen. With an average water temperature of 82°F (28°C), the swim promises a refreshing and comfortable experience. Bike (90km): Get ready for a ...