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Issue Combining Two Garmin Activities

Posted: Sun Nov 02, 2025 3:00 pm
by DVR
Hello,

I have two separate files — my Garmin 1050 saved a workout when I stopped to repair a flat tyre, so I had to continue with a new recording.
After combining them using the GOTOES tool, I noticed a few issues:
- My HRM and power meter are not recognized in the resulting Garmin activity. The hardware is not shown in the activity. (minor issue)
- Power is not recogniced (see screenshot in attachement)
- Although the combined activity shows over 100 miles, I didn’t receive the 100-mile badge. (big issue :-) )

Is it normal for this kind of data to be lost when merging files?
Does anyone know a fix, or am I doing something wrong?
Also, the GOTOES output file is in “.gpx” format — is that the correct extension to use for merging Garmin activities?

All files are attached.

Thanks in advance!

Re: Issue Combining Two Garmin Activities

Posted: Sun Nov 02, 2025 4:03 pm
by fulmar2
Thanks for the questions.

The GPX format is an “old” format. It was created back when the only information stored in a file was time and position. Strava uses a modified version of the GPX format that has “extensions” which allow GOTOES to also insert heart rate, temperature, and cadence - but this is not standard.

Next in the evolution of activity files we got TCX. This was a verbose file format that natively allowed fitness data lie heart rate and cadence, but omits temperature. There is a rudimentary way of storing the device name, but it is in text and may not be extracted reliably by all platforms.

Shortly afterwards, Garmin / ANT introduced FIT format. This format can store a rich variety of data. Everything you’re missing. This format is highly compressed and complex. It is also extendable in the sense that developers can add their own custom data fields. Also, devices are identified by numeric codes (assuming the manufacturer has registered with ANT)….

As to challenges and badges, this is a very common question addressed in the forums:


viewtopic.php?t=177

Hope that helps explain what you are seeing.

Re: Issue Combining Two Garmin Activities

Posted: Sun Nov 02, 2025 4:26 pm
by DVR
Thanks. It worked. I had to renew my yearly subscription. I didn't knew it was due.

Thanks for the quick help and reply!!!