Featuring the proven 80/20 intensity balance described in Matt Fitzgerald's bestselling book 80/20 Running, this 5K Level 0 training plan will provide you with the same workout structure used by the most successful runners in the world. TARGET ATHLETE This plan in intended for athletes without a running background attempting their first 5K event, or for Masters athletes looking for a low-volume plan. You should be able to comfortably run for at least 25 minutes before you start the plan. 100% ...