You can now upload .fit files for completed activities. Laps are not imported yet but other stuff should work. I have only tested this on files from my Garmin Edge 130+ and my wife’s Garmin Forerunner 230.
I am busy with other related stuff like making it possible to delete activities from Strava on Intervals.icu only, add manual activities on Intervals.icu without having to do so on Strava etc…
You can download the original uploaded file on the activity data page:
Is it possible to add such an upload function also for TP or other workouts for import? We had already talked about this elsewhere today 
Uploading .fit files for workouts (not completed activities) is on the todo list.
By default .FIT-files downloaded from Garmin are compressed. Any chance to make the upload accept the zipped format?
I will definitely do that. Was thinking about it today.
ZIP file upload is now supported. All zip and gpx (and .gz versions) found in the zip are imported.
