Issue Combining Two Garmin Activities

A place for the community to help each other out with getting the most out of the Combine FIT, GPX or TCX files for Strava Upload Tool.
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DVR
Posts: 2
Joined: Sun Nov 02, 2025 2:53 pm

Issue Combining Two Garmin Activities

Post 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!
Attachments
No hrm, no edge1050 recognized
No hrm, no edge1050 recognized
No power?
No power?
No power.png (8.32 KiB) Viewed 1476 times
GOTOES_9463885608078379.gpx
Combined file by GOTOES
(8.33 MiB) Downloaded 84 times
2025-11-02-12-49-26.fit
Original 2
(387.38 KiB) Downloaded 91 times
2025-11-02-08-11-15.fit
Original 1
(741.24 KiB) Downloaded 86 times
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fulmar2
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Joined: Wed Nov 25, 2020 4:21 am
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Re: Issue Combining Two Garmin Activities

Post 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.
DVR
Posts: 2
Joined: Sun Nov 02, 2025 2:53 pm

Re: Issue Combining Two Garmin Activities

Post 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!!!
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