It’s nice to be able to track workout completion in the calendar. However, I’ve found that it’s only possible to pair with the latest Strava activity from that day - e.g., when doing the workout in the morning and commuting by bike, the app tries to pair the workout with my return in the evening.
I also tried to re-order the Strava activities or dragging the workout onto the correct activity (a popup on the drop event would be convenient, there) to no avail.