Durability in Ultrarunning: How to Measure and Improve Ultrarunning’s Most Important Variable
CHOOSE YOUR FORMAT ►WATCH THE VIDEO ►LISTEN TO THE PODCAST ►READ THE ARTICLE Why You Fall Apart After Hour 3 For decades, runners have focused on measuring, testing, and optimizing three performance variables: VO₂max: the ceiling of your aerobic engine Lactate threshold: the upper edge of sustainable intensity Running economy: the oxygen cost of moving …







