At the start of this plan it is expected that you can already run steadily for over an hour once a week. If this is not possible consider starting a longer plan to give you time to build into the distances or implement a run/walk strategy for the longer runs to start with.
The main difference between the half marathon plans and the marathon plans is the duration of the longer runs. The interval sessions focus on longer and more sustained running at threshold or sub-threshold.
I’m a high-performance triathlon and endurance coach with 20+ years of experience coaching athletes from beginner to elite level, including World and National Champions. With Master’s degrees in Exercise Physiology and Sport Psychology, I combine evidence-based training with mindset support to help athletes improve sustainably. I offer personalised coaching, race preparation, performance analysis, and athlete development across all triathlon, running, cycling and swimming distances.