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    Race 2 heart rate issues

    Scheduled Pinned Locked Moved Suunto Race 2
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    • SvenningS Online
      Svenning @Anrich Potgieter
      last edited by

      @Anrich-Potgieter Same here.
      I use an HRMstrap when running, but not on the Rowingmachine.
      Race 2 v2.50.26
      Best, Sven
      photo_2026-01-12_17-11-41.jpg

      Suunto Race 2 (from Garmin FR255, short stint with Suunto RUN)
      Suunto Wing 2
      Suunto smart HRM
      OnePlus 13

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      • Tomas5T Offline
        Tomas5 Gold Members
        last edited by Tomas5

        Same here, first activity with new firmware. First 11 minutes of OHR reading is incorrect. I had same pace from begining on closed lap. My HR was higher from beggining. Between 30-40min lower HR is fine as i went slower in that part.

        IMG_1413.jpeg

        But i experienced something like that rarely with old firmware too.

        Suunto Ambit 2 > Suunto 5 > Suunto Race 2

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        • T Offline
          the_mr_allen
          last edited by

          Came here to see if anyone else was seeing this. Had a few workouts and suspected this but on a new programming and 2nd guessing. Today, I wore this and bicep strap with AmazFit app sync. WILDLY different results for the first 10 mins or so.

          First 3 mins or so is a warmup and expected the lower rates there, but after an initial spike, you see the strap lock on at least 5 mins sooner to my cadence.

          Suunto HR Race 2.jpeg
          AmazFit HR.jpeg

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          • Adam RickA Offline
            Adam Rick @Anrich Potgieter
            last edited by

            I have a similarly suspicious HR output from a pool swim yesterday.

            Screenshot_20260114_145808_Suunto.jpg

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            • Anrich PotgieterA Offline
              Anrich Potgieter
              last edited by

              signal-2026-01-15-173918_002.png signal-2026-01-15-173918_003.png

              Another two workouts with very broken HR, the HR is locked until my first rest, then begins to climb.

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              • T Offline
                the_mr_allen @Anrich Potgieter
                last edited by

                @Anrich-Potgieter Ok. I did a repeat of the same workout with the Vert 2 instead of my Race 2 and was back within normal ranges of the bicep strap. Not sure if this is something just with the Race 2 update as they supposedly share the same sensors. I’ll keep testing.

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                • Tomas5T Offline
                  Tomas5 Gold Members
                  last edited by

                  @dimitrios-kanellopoulos @pavel.samokha is there any known issue to suunto with HR too low for around first 10 minutes of excercise with latest firmwareon Race2 ?

                  Suunto Ambit 2 > Suunto 5 > Suunto Race 2

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                  • Timo HelferT Offline
                    Timo Helfer
                    last edited by Timo Helfer

                    I have a similar problem with my Race and Polar H10, where it gets stuck at 70-80bpm sometimes.
                    Screenshot_20260124-173404.png

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                    • Fulvio FerrariF Offline
                      Fulvio Ferrari
                      last edited by

                      I had the same issue yesterday and today the heart monitor stopped working. After a hard reset, the HM came back and it is not working

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                      • D Offline
                        Daniel Thomas
                        last edited by

                        I recently got a Vertical 2 and today I did a comparison with a chest strap on the indoor trainer. I am coming from a Garmin Instinct, which always underread my heart rate so much that it was useless. I was very disappointed when I looked at the Vertical 2 during warm-up, where I was already breathing harder and the watch only gave me around 80 bpm, which is what I usually have for an easy walking pace on the flat. I started thinking that there is something wrong with my blood flow because it also doesn’t work! After 10 minutes give or take it was however spot on and matched the strap even up to a heart rate approaching 180 bpm.

                        compare-activities.png

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                        • L Offline
                          larrybbaker @Daniel Thomas
                          last edited by

                          @Daniel-Thomas cycling is always hit or miss due to arm tension/grip etc. Frequently discussed here.

                          Vertical Ti Solar
                          Race 2
                          iPhone 17 Pro

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                          • P Offline
                            piotras
                            last edited by

                            Hi everyone.

                            I got the very same issue as the others. Interestingly enough I bought the watch this week on Monday, did a setup, firmware update, and literally every activity has wrong HR readings.

                            The watch is struggling during first minutes during activities but that’s not all.

                            I was thinking ok, there is cold outside or smth and that’s why the HR is not quite catched , but no, even running at home for couple of minutes seems a struggle for the watch.

                            Btw. when I don’t do any activity and then let’s say I’ll quickly climb some stairs to the point where normally my arm band is showing up 130-140 and I am feeling tired, the watch is showing up 90-100 which is so weird.

                            I am thinking of returning it, as I still have an opportunity to do so.
                            I’ll try to reset the watch again, but I don’t expect any fireworks.

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                            • C Offline
                              cumbrian-runner @piotras
                              last edited by

                              @piotras I see poor HR too

                              https://forum.suunto.com/topic/14698/new-race-2-heart-rate-awful-distances-too-short

                              Can’t comment on earlier firmware as watch updated itself out of the box

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