Hi Alexander,
Here are some conversion that succeeded but in QGIS is not same.
Gpx → Osm
Gpx → Gml
Gpx → Gpx
Gpx → Topojson
Attached Input + Output +QGIS files
4524 - Aspose.7z (1.5 MB)
Your quick answer is a…...timestamps, elevation, and sensor data (heart rate, speed). OSM (OpenStreetMap...Meaningful Metadata (Tags) GPX data is “dumb” regarding semantics...