Spring Running Tips

Runner’s World ran a feature on durability and “physiological decoupling” on March 27, 2026, written by Matt Rudisill, laying out four concrete training strategies used by coach Cliff Pittman. (runnersworld.co.za) A large analysis of 82,303 marathon finishes defined decoupling as the internal-to-external workload ratio and reported an overall decoupling of 1.16 ± 0.22 with the first detectable drift at 25.2 ± 9.9 km. (link.springer.com) That study classified runners into low, moderate and high decoupling groups (about 34.5%, 32.7% and 32.8% of the sample) and found magnitude and onset of decoupling were significantly associated with marathon finishing time. (link.springer.com) Runner’s World quotes Pittman’s four strategies—high-volume zone‑2 periodisation, staged intensity progression, durability-specific long efforts, and monitoring cardiovascular drift—and notes he used those methods with Molly Seidel when she ran the Black Canyon 100K in 8:25:13. (runnersworld.co.za) Clinical guidance and coaching literature back cautious weekly progressions: a 2020 JOSPT commentary calls for progressive, gradual load increases to lower injury risk, while Outside’s coaching guidance recommends only two to three consecutive weeks of mileage increases before scheduling a cutback week. (jospt.org) The decoupling metric in the 82,303-runner analysis used percentage of maximum heart rate as the internal workload and speed relative to estimated critical speed as the external workload, meaning standard GPS‑watch heart‑rate and pace data can be used to screen for decoupling in training. (link.springer.com)