I needed to do this as GIS applications do not parse FIT files. I decided to create this package after spending a few hours searching for a simple solution to quickly convert hundreds of FIT files to GPX. You need to fix files downloaded from Strava by converting the raw.GPX is an XML based format for GPS tracks.FIT is a GIS data file format used by Garmin GPS sport devices and Garmin software.It also includes tools to convert Strava data downloads in bulk to GPX.
This is a simple Python library for converting.