This Six-Month Advanced Half Distance Triathlon Training Plan is engineered specifically for the unique demands of the Valdivia Half Distance Triathlon — from the chilly Calle-Calle River swim to the fast, rolling bike and flat city run. But before you begin, you must meet these prerequisites: ✅ A consistent training base of at least 8–10 hours per week for the past 8–12 weeks ✅ The ability to swim 2,000 meters continuously, bike for 2–3 hours, and run up to 90 minutes ✅ Previous triathlon ...