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Connecting Garmin

Status: Available

Garmin connects directly to Runsei, with no other app in between.

What Runsei reads from it

  • Activities: type, distance, time and pace
  • Average heart rate for each run
  • Sleep, resting heart rate and HRV

What Runsei can send to it

Planned sessions: yes.

  • Your next 7 days of sessions, kept on your Garmin calendar and updated when your plan changes (turn on Keep my next sessions on my watch), or one session at a time with Send to watch.
  • On the watch they are guided workouts with the pace or heart-rate target Runsei set. They appear once your watch syncs with Garmin Connect.

How to connect, step by step

  1. In Runsei open Profile, then Data hub (the Connections screen), on the web or on the phone.
  2. Find Garmin and tap Connect Garmin.
  3. Garmin’s own sign-in opens. Approve access and you come back to Runsei.
  4. Open Garmin Connect to sync your watch. Each new activity then reaches Runsei by itself.
  5. Optional: on the Garmin page, turn on Keep my next sessions on my watch.

What does not work

  • Only what happens after you connect: activities from before are not imported.
  • Your coach reads your Garmin runs and recovery data only if you separately allow it on the Garmin page (once that choice is offered to you), and you can withdraw it any time.
  • Runsei never posts activities to your Garmin account.
  • Disconnecting erases the runs and recovery data that came from Garmin and takes the upcoming sessions off your Garmin calendar. Runs from other sources stay.

What you need

Phone
Any phone with the Runsei app, or the web app. The connection itself happens between Runsei and Garmin.
App build
A current Runsei app. Nothing special to install.
Watch models
A Garmin watch that syncs to Garmin Connect. See the compatible devices below for your model.

Compatible devices

Last checked 1 Nov 2026. Tested means someone used that exact model with Runsei. Should work means the code or the maker’s own pages say it does, not yet tried on that model. Not supported and Not known are what they say.

  • Forerunner 165, 255, 265, 570, 955, 965, 970

    Tested

    Tested: Garmin Forerunner 965, by our team, 29 Oct 2026. Other models in this group: not tested yet.

    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • Forerunner 55, 245, 745, 945 and older

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Not known

  • fēnix 7 and 8, epix (Gen 2) and Pro, Enduro 2 and 3, quatix 7 and 8

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • fēnix 6 series

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Not known

  • Instinct 2, 2S and 3

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • fēnix 9 and 9 Pro, Forerunner 170, Venu 4 and X1, vívoactive 6, Instinct Crossover and E

    Should work, not tested
    Runs to Runsei
    Yes
    Sessions to the watch
    Not known
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Not known

  • Venu 3, vívoactive 5

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Not known
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • Venu 2, Venu Sq, vívoactive 3 and 4

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Not known

  • Lily 2 Active

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

Not tested yet

  • Sending sessions has been proven on a Forerunner 965 only (tested by our team, 29 Oct 2026). Every other model: not tested yet.
  • HRV from Garmin: not tested yet.

More

Brand names and logos belong to their owners. Runsei is not endorsed by, sponsored by or affiliated with them. Health data you connect is stored in the EU and is never used to train anyone’s models.