Workouts on your watch
You can send Saved workouts to Garmin Connect and bring completed runs back onto the calendar.
Out to the watch
Once a running workout is Saved in Singlet, Garmin sync pushes the structure to Connect so it can land on your watch. Strength, rest, and other non-running days stay on the calendar here.
Back from the run
When you finish a session, the activity file comes back. If the workout carried a handle, Singlet links the activity to the planned session and marks it complete.