Conquer the Course with Confidence – Your Journey Starts Here The Half Distance Oceanside Triathlon delivers an unforgettable racing experience, blending Southern California’s oceanfront charm with a uniquely challenging course. From a 1.2-mile swim in the calm Oceanside Harbor to a scenic 56.2-mile bike ride through Camp Pendleton and a fast, two-loop 13.1-mile run along The Strand, athletes face both beauty and grit. To meet this challenge head-on, you need more than determination—you need a ...