How to Calibrate Garmin Instinct Altimeter - YouTube
How to Calibrate Barometric Altimeter for Garmin Smartwatches
Why is my Instinct solar's altimeter so accurate when I'm at the coast meanwhile there would be a (+/-) 20m error when I'm at my residence which is 2km away from the
Steps to Calibrate the Barometric Altimeter on Venu 2 Series | Garmin Customer Support