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    Race 2 heart rate issues

    Scheduled Pinned Locked Moved Suunto Race 2
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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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