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    OHR accuracy of owners of Race 2

    Scheduled Pinned Locked Moved Suunto Race 2
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    • A Offline
      Adam.B @Tomas5
      last edited by

      @Tomas5 I have had issues with my race 2 HR accuracy when doing movements like the skierg, rowing, wallballs, etc. I think my issue is the strap that comes with the race 2. I wore my wife’s Garmin side by side during a workout to compare and the Garmin picked up my hr perfectly while my race 2 was very inaccurate. It just wouldn’t pickup my HR sometimes at all while the Garmin had no problems. I even had my wife wear the Garmin and race 2 side by side. I think the band on the race2 is the culprit because it’s so stretchy it’s hard to get the proper fit. The band is very comfortable but the stretchiness isn’t great for HR accuracy. During runs the HR accuracy is perfect.

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      • Tomas5T Offline
        Tomas5 Gold Members
        last edited by

        I will get back later after few weeks so people with same problem have some answers. At least for me it looks with Race 2 better than with S5. Not sure if it is accurate but at least no spikes with 200bpm while normal walk etc.

        Walk looked good HR usually between 100-120 which is correct for me.
        On bike it looks good too. I think there was rise of HR while riding down bumpy road while i think my real HR was lower but other than that it was correct. So for now good but this is only after two excercises. Will let you know later.

        Suunto Ambit 2, Suunto 5, Suunto Race 2

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        • VoiGASV Offline
          VoiGAS Silver Members
          last edited by

          Are there signs of cadence lock during downhills? Thats the only situation where the Race S OHR really fails for me


          Race S
          Ambit3 Vertical

          Tomas5T 1 Reply Last reply Reply Quote 0
          • Tomas5T Offline
            Tomas5 Gold Members @VoiGAS
            last edited by

            @VoiGAS i don’t run, i will see while hiking

            Suunto Ambit 2, Suunto 5, Suunto Race 2

            Tomas5T 1 Reply Last reply Reply Quote 0
            • Tomas5T Offline
              Tomas5 Gold Members @Tomas5
              last edited by

              Today possibly cadence lock in first half? Not sure but strange change in middle of activity while i walked same speed all the way.IMG_0893.png

              Suunto Ambit 2, Suunto 5, Suunto Race 2

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              • 2 Offline
                2b2bff @Adam.B
                last edited by

                @Adam.B which Garmin are we speaking of?

                Suunto Race S

                Tomas5T 1 Reply Last reply Reply Quote 0
                • Tomas5T Offline
                  Tomas5 Gold Members @2b2bff
                  last edited by

                  Today I did bike ride, almost all it was done on asphalt road. Here is comparison of Suunto 5 (using Suunto Smart Heart Rate Belt), and Suunto Race 2 OHR sensor.

                  Screenshot from 2025-09-28 13-25-55.png

                  Suunto Ambit 2, Suunto 5, Suunto Race 2

                  L 1 Reply Last reply Reply Quote 1
                  • Tomas5T Tomas5 referenced this topic
                  • L Offline
                    Luis Andés Olmedo Bronze Member @Tomas5
                    last edited by

                    Yesterday during a long run. Constant pace all the way.
                    Captura 2025-09-28 a las 17.07.20.jpeg.png

                    Jean-Philippe REYJ 1 Reply Last reply Reply Quote 1
                    • Jean-Philippe REYJ Offline
                      Jean-Philippe REY @Luis Andés Olmedo
                      last edited by

                      @Luis-Andés-Olmedo
                      Ok so I am not alone with those crazy high bpm in the beginning of each easy run…

                      sorinusS 1 Reply Last reply Reply Quote 1
                      • sorinusS Online
                        sorinus @Jean-Philippe REY
                        last edited by

                        @Jean-Philippe-REY said in OHR accuracy of owners of Race 2:

                        @Luis-Andés-Olmedo
                        Ok so I am not alone with those crazy high bpm in the beginning of each easy run…

                        The crazy high BPM at the beginning of an easy run is since forever on my Vertical too.

                        Suunto Vertical Ti

                        Tomas5T 1 Reply Last reply Reply Quote 0
                        • Tomas5T Offline
                          Tomas5 Gold Members @sorinus
                          last edited by Tomas5

                          @sorinus try to wait minute or two after watch lock on HR before starting your excercise.

                          Suunto Ambit 2, Suunto 5, Suunto Race 2

                          1 Reply Last reply Reply Quote 2
                          • EgikaE Offline
                            Egika Platinum Member @Tomas5
                            last edited by

                            @Tomas5 with almost every Suunto watch I had bad OHR readings when riding my bike.
                            Usually it would eventually just fall into the lower 80s and stay there.

                            Race 2 was the first watch to ever got OHR in cycling right for me! 🙂

                            t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal, Race S All Black / Titanium Courtney, Run Lime

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                            • M Offline
                              Matteiva @Tomas5
                              last edited by Matteiva

                              @Tomas5 Mine is 100% off… See my report https://forum.suunto.com/post/177055

                              With screen capture, same evening first 10k easy with suunto ohr 165/170…
                              Then another last km with polar chest just to confirm I was not crazy or hill 🙂

                              Same pace in both case 5:35 per km

                              9089.jpg 9091.jpg

                              Tomas5T 1 Reply Last reply Reply Quote 0
                              • Tomas5T Offline
                                Tomas5 Gold Members @Matteiva
                                last edited by

                                @Matteiva my test from bike ride turned out good. Comparing to chest strap. I will do similar for walking activities. I am suspiciouse there is possible cadence lock when watch is not tight on your wrist. But i will see after comparison with chest strap. Hope i will find time to test this week.

                                Suunto Ambit 2, Suunto 5, Suunto Race 2

                                M 1 Reply Last reply Reply Quote 1
                                • Tomas5T Offline
                                  Tomas5 Gold Members
                                  last edited by

                                  With old Suunto 5 i hade from time to time crazy high HR measurement using OHR sensor. At least this didn’t occured yet on Race 2. So big improvement in that for my.

                                  Suunto Ambit 2, Suunto 5, Suunto Race 2

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                                  • M Offline
                                    Matteiva @Tomas5
                                    last edited by Matteiva

                                    @Tomas5 🙂 in 10 years that’s the worst OHR I have ever seen for me while running

                                    chest are always the best for specific workout, but for daily training or trail a good OHR should be enough, I use both chest and ohr, but very disappointed with the race 2, meaning I can not train with it’s ohr 🙂

                                    G G 2 Replies Last reply Reply Quote 0
                                    • G Offline
                                      gogapo @Matteiva
                                      last edited by

                                      @Matteiva I’ve been having a few problems with my Race 2, but OHR isn’t one of them — it’s actually been quite good, to be fair. Much better than my previous Coros Pace 3.

                                      Today I did a 45-minute workout: 5 minutes in zone 1, 30 minutes in zone 2, and 10 minutes in zones 4 and 5. The watch performed impeccably in terms of OHR accuracy, as you can see here

                                      Suunto Race 2

                                      M 1 Reply Last reply Reply Quote 2
                                      • G Offline
                                        Gunnar Bronze Member @Matteiva
                                        last edited by

                                        @Matteiva hey, I am curious. Which OHR did you use 10 years ago? Must have been one of the first gadgets.

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                                        • M Offline
                                          Matteiva @Gunnar
                                          last edited by

                                          @Gunnar Tomtom watch, maybe not 10 but 8 🙂 ohr was better 🙂

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                                          • M Offline
                                            Matteiva @gogapo
                                            last edited by

                                            @gogapo it surely depends per individual, skin tone, pilosity, and veins

                                            I always used same strong nylon scratch band since garmin fenix 6x

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