I recently spent a month in England where I uploaded each days activities into Garmin Connect. In Connect the tracks show correctly on a map. When I export them however all I get is a vertical line from England down to zero island - 0,0 longitude latitude:
I see that each gpx file starts with at least one 0,0 track point:
<name>2016.07.27 Castle Great Coxwell Cross Country Skiing</name>
<type>cross_country_skiing</type>
<trkseg>
<trkpt lat="0" lon="0">
<ele>0</ele>
<time>2016-07-27T13:19:08.000Z</time>
<extensions>
<ns3:TrackPointExtension>
<ns3:atemp>31.0</ns3:atemp>
</ns3:TrackPointExtension>
</extensions>
</trkpt>
I have tried removing these 0,0 points but the track still display as above in Google Earth and GPX Viewer (Mac).