I purchased this Intermediate plan for my first Ironman. I had previously done a 70.3; for the 70.3 I made my own plan and struggled with overtraining. I felt this plan was just what I needed it to be, it provided a good structure, will a repeatable pattern, a steady build complemented by rest weeks. By the time my race came, I made a prediction table; due to my extensive training, my prediction was very accurate for each discipline. I recommend getting a training plan if its not your 1st.