HALF IRON Vietnam in Da Nang! Swim: Begin your epic journey with a thrilling 1.9km swim in the pristine waters of Son Thuy Beach. Feel the rush of the waves and the electrifying excitement as you navigate a scenic triangle-shaped course. With an average water temperature of 81.7°F (28°C), it's the ideal start to your HALF IRON adventure. Bike: Embark on an exhilarating 90km bike ride, starting from the beautiful Son Thuy public beach lot, right next to the luxurious Hyatt Regency Resort. Pedal ...