He Took 21 Minutes Off His Half Marathon — No Taper

He took 21 minutes off his half marathon in one training block — no taper, tired legs. If your marathon is this autumn, you are exactly where he is: 13 weeks out. This is the method. This runner had never raced. His half marathon best was 1:52, run alone in training. One block of structured, individualized marathon training later, he ran 1:31 — nearly 19% faster, almost a minute per kilometer — and this weekend he repeated that time on loaded, trained legs in the middle of a marathon build, ...