I have just completed the Llanelli Star Great Welsh Marathon using this plan. I just came back to look at it and was amazed. My completion time was 3:44:07, my recent half marathon PB was 1:44:40 and 10k was 66:31. That's as close to near perfectly in line with the promise as possible and I wasn't aware of it. Well Garmin, despite a few niggles in the plan as indicated above I can confirm that if like me, you follow this plan and you start off ready for it it is 100% achievable.
Right, where are the ultra marathon plans?????