Runner's Edge Half Marathon – Intermediate

About the plan

A 16-week plan based on the Runner's Edge methodology for intermediate runners who want to improve their half marathon time with 5 training days per week, including active recovery days. The program stands out for its sophisticated threshold progression: it starts with 1-mile (1.6 km) repeats and builds to 5 repeats before transitioning to continuous blocks of up to 32 minutes. Long runs in the build phase integrate short intervals (6-8x 0:45-1:00) followed by a long run — a combination that simulates running on fatigue and is a hallmark of the Runner's Edge plans. The peak phase brings expanded pyramids with 7 repetitions (300-300-600-1km-600-300-300m), progressive race-pace tune-ups (1 mile (1.6 km) → 6.5 miles (10.5 km) → 7 miles (11.2 km)) and an 8-mile (13 km) marathon-pace workout in the last peak week.