Tracks, route or courses to Garmin

I would like to create a calendar entry with a training/event or even a race in which I do not set any mandatory requirements that are expressed in numbers.
For example, we have villages on the route and from 300m to the villagesign should be done a sprint and 2 climbs should then be ridden with X watts. However, this does not have to be a value, it is sufficient in a text (the athlete can read).

The background is then to assign this part of the training to several athletes who are in coaching and then everyone already has the route in their training plan and knows about it. It’s not about planning the entire workout as if you were riding on a roller.

I can now upload the GPX file, but to upload a GPX is not the solution, this is just a file.

So the plan would be to make the following route available:
https://www.komoot.com/de-de/tour/1...fMFzcftWo8Owxdpu3BBcDxGzKn964fCn6FLbc&ref=wtd
This should then be run at a pace of X:YY minutes.

… or another route:

with the information, flat 180W and all climbs with at least 240W (whatever).

Something like an event in Garmin would be cool, where you can set the time and the route, which can then be made available.

… or if you could send the Garmin event (link as invitation).
Here is a test event:
https://connect.garmin.com/modern/event/3be42b7b-0929-440e-97e9-06bbb33beaa4