Include Garmin Course in planned workout?

I couldn’t find this feature as a request, so here goes:
It would be great to be able to add a route (Garmin Course) to planned workouts.
In Garmin Calendar this is possible (by selecting Event instead of Workout) but Garmin workout planning misses a lot of great stuff that is in intervals.icu’s workout planning.

Is that something you can download in a file?

On Garmin you can drop a TCX route/workout (only with gpx info) in the “NewFiles” folder. The unit picks it up and transforms it in to a “Course” that you can ride, eventually against a virtual partner. I sometimes do this to re-ride a certain route.
I suppose that the above happens automatically when you create an event on the calendar.

I probably didn’t explain my request properly. I would like to create workouts in intervals.icu and include a route in the workout. There is an import option when creating a workout, but it didn’t accept FIT or GPX formats, which are the formats I can choose when exporting routes out of Garmin.

The other reaction here seems to explain the function in Garmin, but that’s not what I am looking for. I’m hoping that routes can be added to workouts in intervals.icu. (Because workout planning is much better in intervals.icu than it is in Garmin Connect.)

How would the route be translated into the workout steps, power targets and so on? Or are you thinking of something different?

I don’t think you can do this as one “item” on Garmin.
What you can do, is navigate a route (course) on your Garmin and start a prepared workout simultaneously. You will then be guided through the workout while navigating.
As far as I can see, you need to load a course and a workout on your Garmin. And that is what the Garmin calendar entry probably does. It loads both files on your bike computer and starts them together.

This screenshot shows how Garmin does it. You can create a new run (Event) and then select a predefined Route, and combine it with a predefined Workout. They are saved and can be started as one on your device.
Because I like intervals.icu workout scheduling more than Garmin’s, I was wondering if you could replicate this Garmin feature.

How does Garmin present that while you are riding? Seems it would be tricky because the workout is specified with time but the course is not?

Never mind. I will use Garmin when I want to do a workout on a specific route.

Hi, I want to do the same.
Load a fit gpx or other track into intervals as Training.
In this case I need no special workout. But I plan for an other athlete and I have no direct access to his garmin connect.
But I know the track and want that he (or I in case of my Planer) ride this track as Training.