The Lifestyle Intermediate 44-Week Half IRON Triathlon Training is designed for the Intermediate triathlete who has progressed from the Sprint distance to the Olympic triathlon distance and now desires to attempt the Half IRON distance and can handle a heavier training load. Training is based on heart rate % so a Garmin type of device is helpful. This is also a structured plan; workouts can be auto-synced to your device. The plan uses mini-periodization based on a 4/1 structured workout ...