The Half Distance Oceanside Triathlon features a breathtaking course—and it demands the right preparation. Our 36-week beginner training plan is built specifically to guide first-time and novice triathletes from start to finish with confidence and strength. Why This Training Plan Works for Oceanside The Oceanside course offers a rare mix of beauty and challenge. You'll: Swim 1.2 miles in the calm, protected waters of Oceanside Harbor, perfect for refining technique. Bike 56.2 miles through ...