Calories are zero on all imported activities.

[Roadieee]

Have you thought about changing from Activity to Workout in the Garmin API? The iFit tcx exports contain calories burnt. As it stands today (using Activity), calories always show up as 0 on imported activities in Garmin Connect. Using Workout lets you set calories under duration_calories.

https://developer.garmin.com/fit/file-types/workout/

I really appreciate your work. This project is exactly what I was looking for when trying to integrate the two!

[flackdl]

That does makes sense, but Garmin Connect doesn't officially allow 3rd party tools (I tried requesting) to access their system, so I'm relying on another library (https://github.com/La0/garmin-uploader) which sort of fakes the process of a user uploading data to their website, which appears to only support Activities (vs Workout). If you know of another way please send it my way. Garmin isn't open to this type of thing unfortunately.

[sanicki]

An indirect solution would be to sync iFit to Strava and export activities from Strava.