
Why Power? Your training is based on your fitness
Power sets training targets based on your current running fitness.
Individualised targets, based on your current capability.
Targets that maximise training results while minimising risk of injury.
So you get the most from your training – all the positives with few (or none) of the negatives.
How does power identify your running fitness?
Second-by-second as you run, power provides numbers representing your effort.
With a few maximum effort runs (no lab testing needed), you can identify your Threshold Power.
Your Threshold Power represents your current running fitness.
It’s a foundation for most other power metrics.
How does power set training targets based on your fitness?
Power uses your Threshold Power as an anchor, positioned at 100% on a scale from 60-65% (no longer walking) up through 150% (track or hill sprints) and beyond.
For example, you might use:
👉🏼 80% of Threshold Power or less for an easy run
👉🏼 94-96% for 10-20 minute intervals at half-marathon power
👉🏼 102-105% for 3-minute VO2max intervals
And when training improves your fitness (when training increases your Threshold Power), your workout targets move to remain relative to your Threshold Power, matching your increased fitness (matching your ability to do more).
Is it only about the numbers?
No.
Training is much more than actions driven by numbers.
But training should be underpinned by numbers – and power can provide those numbers.
Topic: Why Power?
⏩ Your training is based on your fitness
⏩ Power targets are easy to use
⏩ Metrics to manage training load
Verified for accuracy: 19 October 2026
