Your Running Fitness score reflects your marathon performance. Runners typically have different strengths and weaknesses, and Running Fitness aims to utilize each of the individual ability scores to better understand areas of strength and areas to improve.
The Running Fitness Score updates based on changes detected in the relationship between your pace and heart rate during outdoor runs. In short, if your heart rate increases at the same pace, COROS will perceive this as a decrease in fitness, and vice-versa.
For the Running Fitness score to update, it requires specific criteria:
- Activities must be recorded in Run or Track Run mode.
- Activities must be at least 25 minutes long, without any pausing.
If an increase or decrease is detected in any one of your four Running Fitness abilities, you may see that score change after just a single run.
Each running ability (Endurance, Threshold, Speed, and Sprint) has a recommended pace zone based on your current ability that you can target if you wish to make improvements in that area.
The gap in the suggested pace zones between Endurance and Threshold refers to your Aerobic Power zone. When you're training primarily in this zone, running fitness tends to plateau with no significant changes. Though this zone can be relevant for marathon training, COROS recommends focusing more on other zones to improve your overall fitness and running ability.
Still have questions? Reach out to our team by emailing coach@coros.com.