Performance Curves
Open EffortSignalCompare your best sustained power, heart rate and running pace over different durations.
The cycling power curve and duration table compare the best efforts recorded in two periods. Demo data · Web app 0.1.13. Open full-size image
Facts and access
| Actions | Compare your best sustained power, heart rate and running pace over different durations. |
|---|---|
| Open and use | Progress or Activity → performance/power/heart-rate curve → comparison period. |
| Data | Sufficient continuous samples for each duration |
| Sports | Cycling power, supported running power/pace, heart rate |
| Platforms | Web |
| Availability | Available with limits |
| Limits | A curve is a best recorded effort, not proof of physiological maximum; gaps and short recordings exclude durations. |
| Action | Free | Pro |
|---|---|---|
| Sensor charts, zones and intervals | Included | Included |
All Pro features are free through January 31, 2027. No credit card or automatic charges. After Early Access, keep using Free or choose Pro. Pricing.
Compare sustained power across durations
Activity analysis provides available power-duration bests; Progress compares period bests for cycling and supported running power. A point answers the best average recorded for that duration. A short sprint and a 20-minute effort therefore belong to different positions on the curve. Gaps or insufficient recording length can leave longer durations absent.
Inspect sustained heart-rate bests
The supported heart-rate curve uses recorded samples and duration checkpoints. Whole-activity comparison can display multiple heart-rate curves alongside power curves. A higher sustained heart rate is not automatically an improvement; interpret it with the activity, output and conditions.
Use running pace in the running comparison
Progress exposes supported running pace performance separately from cycling power. Pace is a time-per-distance representation, so a smaller pace value means faster running. A GPS or speed gap can limit the available duration evidence; this page does not promise a generic pace curve for every sport or every comparison dialog.
Open the recording behind the point
Compare selected periods or seasons, then inspect source activities for the efforts that matter. The record is bounded by what was imported and measured. Estimated FTP uses selected cycling power evidence with additional model gates; the best-power curve does not itself apply a new FTP. Power Intensity is a threshold-relative activity summary, not a duration-curve point.
Product behavior checked September 10, 2026 · Release 0.1.13
Use your own training history
Create an account and start with a supported provider or activity file.