HALF IRON Vietnam in Da Nang - Swim: Start your adventure with a 1.9km swim in the pristine waters of Son Thuy Beach. Navigate a scenic triangle-shaped course, embracing the thrill of the waves and the excitement of competition. With an average water temperature of 81.7°F (28°C), it’s the ideal beginning to your HALF IRON challenge. Bike: Next, tackle the 90km bike course, starting from the beautiful Son Thuy public beach lot, adjacent to the luxurious Hyatt Regency Resort. Ride along the ...