As with any other intensity the more time you spend running at it the better your body gets at running at that intensity. This session exposes your body to time at your threshold intensity and as a result you will improve your ability to sustain the higher pace in a race. All runners (and triathletes) can benefit from this higher intensity of training, especially athletes with events from 10km out to a marathon.
View More Friday Fartlek Run: Zwift Academy Tri 2020 Threshold Economy