Is it possible to get my speed kilometer per kilometer ? I mean, at which speed did I run the first kilometer ? Same question for second kilometer etc.
Thank you very much for your help.
Each km is a lap, so you just need to look at the information for your laps.
You can see this info in the History widget on your watch: select an activity (eg. a run), then tap the ^ at the bottom of the screen. This will enable you to see Laps and Time in Zone.
You can also see this information in the Garmin Connect app.