The Lifestyle Intermediate SIX (6) Month 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, can handle a heavier training load, and wishes to achieve a PR at the HALF-IRON distance. Training is based on heart rate % a Garmin type of device is helpful. This is also a structured plan, workouts can be auto-synced to your device. Prerequisite ...