Build Strength. Embrace Speed. Conquer Oceanside. Racing the Half Distance Oceanside Triathlon requires more than just endurance — it demands intelligent, race-specific preparation that mirrors the course’s unique terrain and conditions. That’s why our 6-Month Intermediate Training Plan is purpose-built to help you perform at your best on this spectacular course. 🌊 Swim Strong in Oceanside Harbor With an average water temperature of 61°F (16°C), the 1.2-mile swim in the sheltered harbor ...