biking gpx file only includes metadata

[epragalakis]

Hello,
I recorded a couple of sessions on a indoor bike, and when I exported the gpx files the data look like that:

<?xml version="1.0" encoding="UTF-8"?>
<gpx
version="1.1"
creator="OpenTracks"
xmlns="http://www.topografix.com/GPX/1/1"
xmlns:topografix="http://www.topografix.com/GPX/Private/TopoGrafix/0/1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:opentracks="http://opentracksapp.com/xmlschemas/v1"
xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v2"
xmlns:gpxtrkx="http://www.garmin.com/xmlschemas/TrackStatsExtension/v1"
xmlns:cluetrust="http://www.cluetrust.com/Schemas/"
xmlns:pwr="http://www.garmin.com/xmlschemas/PowerExtension/v1"
xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.topografix.com/GPX/Private/TopoGrafix/0/1 http://www.topografix.com/GPX/Private/TopoGrafix/0/1/topografix.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v2 https://www8.garmin.com/xmlschemas/TrackPointExtensionv2.xsd http://www.garmin.com/xmlschemas/PowerExtension/v1 https://www8.garmin.com/xmlschemas/PowerExtensionv1.xsd http://www.garmin.com/xmlschemas/TrackStatsExtension/v1 https://www8.garmin.com/xmlschemas/TrackStatsExtension.xsd http://www.cluetrust.com/Schemas https://www.cluetrust.com/Schemas/gpxdata10.xsd http://opentracksapp.com/xmlschemas/v1 http://opentracksapp.com/xmlschemas/OpenTracks_v1.xsd">
<trk>
<name><![CDATA[2025-06-21T15:03+01]]></name>
<desc><![CDATA[]]></desc>
<type><![CDATA[biking]]></type>
<extensions>
<topografix:color>c0c0c0</topografix:color>
<opentracks:trackid>31f0cc48-6482-4300-b36a-3f595ba455f9</opentracks:trackid>
<opentracks:typeTranslated><![CDATA[biking]]></opentracks:typeTranslated>
<gpxtrkx:TrackStatsExtension>
<gpxtrkx:Distance>0.0</gpxtrkx:Distance>
<gpxtrkx:TimerTime>891</gpxtrkx:TimerTime>
<gpxtrkx:MovingTime>891</gpxtrkx:MovingTime>
<gpxtrkx:StoppedTime>0</gpxtrkx:StoppedTime>
<gpxtrkx:MaxSpeed>0.0</gpxtrkx:MaxSpeed>
</gpxtrkx:TrackStatsExtension>
</extensions>
<trkseg>
</trkseg>
<trkseg>
</trkseg>
</trk>
</gpx>

I would expect to see time and cadence data, which are visible in the mobile app.

Am I missing something here? (If its a bug I can raise an issue)

[dennisguse]

GPX doesn't support this; only KML/KMZ.

The underlying problem is that GPX always requires GPS coordinates to be present and indoor's none are stored.
While exporting OpenTracks skips this data, so the export will look like this.

[epragalakis]

In the current case where exporting to GPX is possible: I would expect the coords to either be static (from the actual location of the bike) or to default to a fixed coordinate,
otherwise this option shouldnt be available.

(the reason thats an issue to me is that I cant import the file to strava - but I will also look if thats possible with KML/KMZ.

[dennisguse]

Fixed coordinates or single coordinates will likely not work: most applications compute distance from the coordinates - although it is not a good idea.

Anyhow: GPX should be removed as it is realllllyyyy limited.
Replacing it with fit (also made by Garmin) is sadly not a simple task.

So, we are stuck with KML works and GPX mostly.... Usability sucks in some cases like this.

[epragalakis]

👍 thanks @dennisguse :)

(I'll write a script for my usecase, and share it in this thread in case anyone else interested)