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Merge activities - keep power data

  • May 10, 2025
  • 7 replies
  • 217 views

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Hello,

I manage to merge two activities using third-party tools, but when I do, I lose my power data.

Is there a way to merge activities whilst keeping the power data?

Best answer by arc88

GPX doesn't store data for power. If you are a gotoes donor you can combine and export your original FIT files and preserve all the data streams. Fitfiletools may be able to do it also. 

7 replies

Vincenzo
Superuser
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  • Superuser
  • May 10, 2025

Ciao ​@TijR. Have you ever been able to see on Strava power data when uploading just one activity?


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  • Author
  • Hub Rookie
  • May 10, 2025

Hi ​@Vincenzo. Yes, I see the power data of each individual activity. But when I merge them into 1 gpx file, there are no more power data.


ActivityFix
Superuser
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  • Superuser
  • May 10, 2025

What tool(s) are you using to merge the activities together?

When you say merge two activities, are you talking about merging the same activity recorded on 2 devices to combine the data streams, or do you mean merging 2 activities back-to-back to create a longer activity?


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  • Author
  • Hub Rookie
  • May 10, 2025

Hello ​@ActivityFix, I mean the second. I accidentally stopped and saved my ride before I was done. Trying to merge the two parts into 1 activity now.

Tool: I was trying 2 different tools, Gps Track Tools and Gotoes for Strava. I was merging GPX files, maybe I have to try a different type of file?

What tool(s) are you using to merge the activities together?

When you say merge two activities, are you talking about merging the same activity recorded on 2 devices to combine the data streams, or do you mean merging 2 activities back-to-back to create a longer activity?

 

 


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  • Superuser
  • Answer
  • May 10, 2025

GPX doesn't store data for power. If you are a gotoes donor you can combine and export your original FIT files and preserve all the data streams. Fitfiletools may be able to do it also. 


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  • Author
  • Hub Rookie
  • May 11, 2025

Thanks a lot for your help all, I was able to fix the problem thanks to you 🙏


fulmar211
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  • Hub Climber
  • January 24, 2026

GOTOES uses a GPX extension that can be read by Strava. It allows you to import any type of file (GPX, TCX, FIT, even CSV). You can then export as GPX without being a donor, and for Strava, at least, you will see your Power, Heart Rate, Cadence, etc.  Strava uses this same extension of the GPX format to store data not normally stored in GPX files.