16 Week first 39.3 Mile plan

This plan is built for the runner who has already finished at least one marathon and wants to take the next step up, without jumping straight into a 50 miler or 100. 39.3 miles, roughly 63km, is exactly three half marathons back to back, a genuine ultra distance that respects where you’re coming from rather than assuming years of ultra experience you don’t have yet.

This plan is not for you if:

  • You have never finished a marathon. Build that foundation first with one of our marathon plans, this plan assumes 26.2 miles is already comfortably behind you.
  • You are targeting 50 miles or further, or you already have ultra finishes under your belt. You need more back-to-back volume and longer time-on-feet work than this plan is built to give you.
  • You are carrying an unresolved injury. See a physio before you start any new block, ultra training punishes small problems that marathon training might let you get away with.
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