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intervals.icu: how to connect Garmin, COROS or Suunto

intervals.icu is a free service that brings your training sessions and health metrics together in one place. SkolCoach uses it as a bridge: connect your watch to intervals.icu and your full history becomes available to your AI coach. Here is the complete setup, step by step.

Step 1. Create your intervals.icu account

    1

    Open intervals.icu

    Go to intervals.icu and sign up with your email. The service is free: no card and no trial-period countdown.

    2

    It only takes a minute

    After confirming your email, you will see an empty calendar. That is expected: your data will appear once you connect your watch.

Step 2. Connect your watch

In intervals.icu, open Settings → Connections and choose your data source:

  • Garmin — select Connect next to Garmin, sign in to Garmin Connect and grant access. Your training history and wellness data, including HRV, resting heart rate and sleep, will sync automatically.
  • COROS — select Connect next to COROS and sign in to your COROS account.
  • Suunto — select Connect next to Suunto and sign in to the Suunto app.
  • Polar and Wahoo — use their respective Connect buttons in the same section.

The first sync can take several minutes because intervals.icu imports your full history, not just recent sessions.

Step 3. Connect to SkolCoach

    1

    Select Connect intervals.icu in SkolCoach

    In the setup wizard or under Integrations, select Connect intervals.icu. An intervals.icu window will open for you to authorise access. Data then flows automatically: new sessions reach your coach as soon as your watch syncs.

    2

    Backup option: use your API credentials

    If the authorisation window does not open, connect manually. In intervals.icu, open Settings → Developer Settings at the bottom of the page, copy your Athlete ID (for example, i123456) and API key, then paste them into SkolCoach. This imports your full history, but new sessions arrive on a schedule rather than instantly.

What happens next

Your coach can access your full history from day one: sessions with lap-by-lap data, HRV, resting heart rate and sleep. Add your goal, and your first fitness review will be ready before your first workout.

Still unable to connect your watch, or has something gone wrong? Message support from the app and we will sort it out together.

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