HALF IRON OCEANSIDE California, where endurance meets the beauty of the Pacific coastline. Swim: Dive into the rolling start of your journey, navigating the pristine waters of Oceanside Harbor. You'll swim a single counterclockwise loop. The water temperature, averaging 61°F / 16°C, offers a thrilling challenge to kick off your race. Bike: Embark on an exhilarating cycling adventure, departing from Oceanside Harbor and venturing through the iconic Camp Pendleton. The initial coastal stretch ...