What I small world! I, too, use Mike Plumb and have for the past 10 years. Why? Because I wanted to combine my marathon and Ironman schedule, and I didn't want to think about it. He has done Kona and Boston and still races, so he knows his stuff. And he also owns a bike transport business and works on bikes.

I get a weekly email with my workouts or they are in Training Peaks. He has successfully gotten me through 12 Ironmans and on to Kona via legacy route. I stick with him because I can message him at any time, and I respect a coach who also still races.