How to launch GCM app from my own iOS app

I'm currently building an iOS app that uses the Garmin  Training API (so this issue has nothing to do with Connect IQ). After sending a structured workout through the API from my iOS app, I want to show a button 'Open Garmin Connect app' that should (obviously open the Garmin Connect app. Preferably at the 'workouts' tab, if possible.

For that I (think I) need the URI/URL scheme which I can't find online. Can anyone help me?