Hi, not sure if a bug or an issue with how data is imported from Garmin, I’ve seen this a bit with my treadmill runs but not like this on an outdoor run. Power data just shows as a solid red line for a solid chunk of my run, see image. Is this a bug? Or a setting of some sort that needs configuring?…

It’s not a bug, nor an issue, it’s a user error… [image] Intervals.icu FAQ Guide FAQ: FTP & Zone Settings How to setup FTP History? FTP in Intervals.icu is copied to each activity. If you change FTP today, old activities are not automatically rewritten. Best …

That’s a classic headache with power data, especially when you’re looking at “Average Power” vs “Normalized Power.” Have you checked if your data includes “zeros”? Sometimes if the head unit is set to exclude zeros when you aren’t pedaling, it makes the averages look way higher on Intervals.icu comp…

That is absolutely not the case in tis example. The RED line indicates that the power is ‘clipped’ because FTP is set too low in settings. And there normally is also red text indicating this just above the charts. Setting FTP at a realistic value, and eventually increasing spike detection to 80% o…

[image] Nadiya: Sometimes if the head unit is set to exclude zeros when you aren’t pedaling, it makes the averages look way higher on Intervals.icu compared to Strava or Garmin. Sorry, but the whole answer smells like AI slop. Intervals always calculates averages with zeros, so it would alwa…

Confusion Around Power Data

Bug Reports

MedTechCD 26 March 2026 15:42 2

It’s not a bug, nor an issue, it’s a user error…

Look for the Why is my Power clipped section.