80/20 Half Marathon – Level 2

About the plan

15-week plan based on the 80/20 methodology for runners who want to improve their half marathon time with a moderate-to-high training volume. This program balances aerobic endurance development with specific quality work. The peak phase includes Cruise Intervals and progressive Tempo Runs to raise the anaerobic threshold, plus long runs with Speed Play and Fast Finish that simulate the demands of the race.