HALF IRON Vietnam in Da Nang - Swim: Dive into your journey with a 1.9km swim in the crystal-clear waters of Son Thuy Beach. Navigate a scenic triangle-shaped course, and feel the thrill of the waves and the excitement of the competition. With an average water temperature of 81.7°F (28°C), it’s the perfect way to kick off your HALF IRON challenge. Bike: Next, conquer the 90km bike course, beginning from the picturesque Son Thuy public beach lot, right next to the luxurious Hyatt Regency ...