This 16-week intermediate Half Ironman training plan is designed for athletes with a solid endurance base who are ready to build speed, volume, and race-day efficiency. The program progressively balances swim, bike, and run volume with targeted intensity, including structured intervals, long endurance sessions, and brick workouts to improve race-specific performance. In this Training plan run workouts are structured using pace, bike workouts are structured using power, and swim workouts are unstructured with instructions. Having a smart bike trainer would be ideal for the weekday bike workouts (check out the EBP 70.3 - Intermediate 16 week (Run Pace, Bike RPE) if you do not have a smart bike trainer).