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    Race 2 heart rate issues

    Scheduled Pinned Locked Moved Suunto Race 2
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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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              • C cumbrian-runner referenced this topic on
              • P Offline
                piotras @cumbrian-runner
                last edited by

                @cumbrian-runner hi, yeah, I have the newest firmware as well.

                I did a hard reset and did a 5km test run, and compared the activity with my old garmin forerunner 255 + polar verity sense arm band.

                Looks much better now, there are some wobbles here and there (like showing up 10bpm higher in around 18minutes), but overall it is pretty good (162 to 163 bpm average).

                My 5km run:
                Zrzut ekranu 2026-02-23 o 08.26.54.png

                Climbing the stairs still not quite good, the HR is updated to proper values only after i stop for a while, and yes I had the watch pretty tight on my wrist and a bit above the bone.

                And to indicate what was going on before hard reset, one of my walks:
                Zrzut ekranu 2026-02-23 o 08.36.55.png

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                • T Offline
                  the_mr_allen @piotras
                  last edited by

                  @piotras I tried a factory reset as well, and did get better. Still odd that the Vertical 2 is still more consistent for me across the board with same sensors.

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                  • Mathieu ChêneM Offline
                    Mathieu Chêne
                    last edited by

                    Hello,

                    Have the same problem, HR stuck at 110 BPM during the first 20 minutes of running, then suddenly goes up to 165 bpm which is the correct reading. It was working better before the last firmware.

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                    • H Offline
                      heslegend
                      last edited by

                      Hi everyone,

                      I am experiencing similar issues on my Suunto Race since a few weeks. The heart rate is often too low (so far only observed while running), sometimes there are sudden jumps after a while. When using an external heart rate sensor, it works.

                      What you should do if you experience the same: Contact Suunto Support!

                      Only then they will now about it. I did this and they told me they are currently not aware of such an issue, but will investigate. They also asked me to upload my log files via the mobile app and will check them. The more people report this, the higher chance that this gets fixed soon.

                      You can find their support chat directly on www.suunto.com by clicking on ‘Support’ at the top and then using the chat on the bottom right.

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                      • R Offline
                        radum
                        last edited by

                        Hi, I have been dealing with the stuck heart rate for a couple of months. Factory reset and firmware updates did not help in my case (currently version 2.53.42). I’ve followed the General guidance from Suunto on this topic, like ensure proper fit and placement, keep firmware updated, no tattoos, etc.

                        For example, today, during a common nordic walking session, the heart rate persisted around 90bpm although the actual value was higher. Only when I stopped (and triggered a decrease) the watch caught up with the reality. On the picture you can see the HR spike when the speed becomes 0.

                        Screenshot_20260409_083333_Suunto.jpg

                        This is not a singular case. In fact, whenever, I climb a hill or increase the velocity, causing a significant HR increase, the watch misses this and keeps staying at the lower level for minutes.

                        I therefore confirm @piotras comment that one has to stop for a while so that the watch provides accurate HR measurements.

                        The question is: when will Suunto finally acknowledge this problem and provide a timeline for a fix?

                        It’s nice and good that we get new features with every update, but everything seems just a card castle if the device fails to fulfill its primary purpose (measuring the HR), most of the other functionalities rely on.

                        isaziI DropQbD 2 Replies Last reply Reply Quote 1
                        • isaziI Online
                          isazi Moderator @radum
                          last edited by

                          @radum is this using an external monitor or the OHR on the watch? Seems a case of cadence locking, typical with nordic walking and poles

                          Watch: Suunto Vertical 2 Titanium Black

                          Blog: isazi's home

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                          • DropQbD Offline
                            DropQb @radum
                            last edited by

                            @radum I experience the same with walking.
                            HR is around 90 BPM on straight road, then I start climb uphill and even I feel that the HR goes up, the watch still shows values around 90 BPM. Usually it is enough to stop for a while until watch recognizes increased HR and after that it seems as the OHR works ok.
                            It may be some kind of cadence lock but even I tried to tighten the strap, move watch on the hand, it behaves the same. Mostly just the pause for a while helps the watch to recognize increased HR.

                            Suunto Race 2

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