HALF IRON OCEANSIDE California, where endurance meets the stunning Pacific coastline. Swim: Begin your journey with a rolling start, diving into the crystal-clear waters of Oceanside Harbor. Navigating a single counterclockwise loop, you'll encounter the invigorating challenge of the 61°F / 16°C water temperature, setting the pace for an exhilarating race. Bike: Embark on an exciting cycling odyssey, starting from Oceanside Harbor and traversing the renowned Camp Pendleton. The coastal ...