Suunto app Forum Suunto Community Forum
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Zonesense readings

    Scheduled Pinned Locked Moved Suunto Race S
    104 Posts 22 Posters 4.8k Views 19 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Ian BeveridgeI Offline
      Ian Beveridge @Max Melchior
      last edited by

      @Max-Melchior Well said! I think the aggressive/dismissive attitude is because they really aren’t very confident. ZoneSense is a bold move by Suunto but it needs more detailed clarification due to its instability. So far I’ve found the ZoneSense watch face itself appears practical when working out but the phone app graphics are scary.

      1 Reply Last reply Reply Quote 0
      • isaziI Offline
        isazi Moderator @Ian Beveridge
        last edited by

        @Ian-Beveridge there is no point in looking at the graph, what matters is just the zone you are in

        Watch: Suunto Vertical Ti

        Blog: isazi's home

        Ian BeveridgeI 1 Reply Last reply Reply Quote 0
        • Ian BeveridgeI Offline
          Ian Beveridge @isazi
          last edited by

          @isazi Thank you for the clarification and simplification.

          So…

          New thresholds are calculated for each workout and the 3 zones are all that counts. The scales and graphs are meaningless.

          Today on my two hour bike ride there was no measurement of ZoneSense thresholds in terms of heart rate. I’ve only seen this difference shown for aerobic threshold - never anaerobic threshold. Tying the two systems together like this is also very useful - when it happens - if it happens.

          isaziI 1 Reply Last reply Reply Quote 0
          • isaziI Offline
            isazi Moderator @Ian Beveridge
            last edited by

            @Ian-Beveridge to be honest, also the thresholds do not matter if you are just using ZoneSense 😄

            Watch: Suunto Vertical Ti

            Blog: isazi's home

            Ivan De RasisI Ian BeveridgeI 2 Replies Last reply Reply Quote 0
            • Ivan De RasisI Offline
              Ivan De Rasis @isazi
              last edited by

              Ieri sera al dal 16 km in poi stranamente la mia fascia cardio ha smesso di funzionare

              Suunto 9 Baro
              Suunto Vertical

              1 Reply Last reply Reply Quote 0
              • helgonet12H Offline
                helgonet12
                last edited by helgonet12

                Hi sorry for posting this here as well but there are no answer in others treads. I and others here in the forum do not get any ZoneSence data at all after the latest firmware update. Nothing on my side have change and it does not work on my Vertical och Race 2. Before the latest update work as it should. In the watch app it only states waiting for data, on iPhone app (latest beta version) it does not show up at all.

                1 Reply Last reply Reply Quote 0
                • Ian BeveridgeI Offline
                  Ian Beveridge @isazi
                  last edited by

                  @isazi Okay! But don’t the ZoneSense thresholds and their shifting values inform us of anything? …or am I still stuck in an out-of-date paradigm?

                  Brad_OlwinB 1 Reply Last reply Reply Quote -1
                  • Ian BeveridgeI Offline
                    Ian Beveridge
                    last edited by

                    There’s a bug with ZoneSense - in real time on the watch (Race S) it just randomly stops tracking while behind the scene it’s correctly logging changes and proper data (as viewed on the phone app). Once it stops displaying proper data it doesn’t recover during the workout.

                    The following screengrab shows data collected for an hour - but the watch stopped displaying the data changing from before half way through. There were calculations for both thresholds. This is the fourth time the live tracking has failed for me.

                    bike thresholds.jpeg

                    Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                    • Ian BeveridgeI Offline
                      Ian Beveridge @Ian Beveridge
                      last edited by

                      @Ian-Beveridge

                      The ZoneSense bug - to which nobody has replied - is manifesting itself in two ways so far.

                      When tracking cycling the ZoneSense in real time on the watchface just stops (as reported ) but behind the scene data is still being collected and displayed in the Suunto phone app. The bug usually appears about half and hour into the workout. (one hour session)

                      When tracking running the ZoneSense real time data is displayed without problem over the entire one hour session. Then when accessing the data in the Suunto phone app there is absolutely no data for ZoneSense.

                      It’s a mess!

                      Brad_OlwinB 1 Reply Last reply Reply Quote 0
                      • Brad_OlwinB Offline
                        Brad_Olwin Moderator @Ian Beveridge
                        last edited by

                        @Ian-Beveridge I think if you consistently see a ZS Aerobic Threshold below your set AT you might want to think about changing your zones. I typically use ZS for Recovery, Endurance and Steady State runs (Steady State intervals are no less than 20 min.) I use Power for short hill intervals and either ZS or Power for Tempo intervals, which are 8-10 min for me.
                        When I am fresh my set AT and LT are very close to those I see in ZS. However, during most of my training I am not fresh and my ZS zones are typically lower. I use ZS intensity zones during my runs to help me gauge RPE as I typically will go too hard when I feel good.

                        Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing/Race2Ti

                        S 1 Reply Last reply Reply Quote 1
                        • Brad_OlwinB Offline
                          Brad_Olwin Moderator @Ian Beveridge
                          last edited by

                          @Ian-Beveridge I have been having some issues with my Smartsensor disconnecting and ZS stopping. I don’t know if this is my belt or a firmware issue but I have reported the problem. It might be related to yours as well.

                          Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing/Race2Ti

                          Ian BeveridgeI 2 Replies Last reply Reply Quote 0
                          • Ian BeveridgeI Offline
                            Ian Beveridge @Brad_Olwin
                            last edited by

                            @Brad_Olwin Thanks for the feedback!
                            I was having a few dropouts of my chest strap - which never happened until recently - so I replaced the battery even though the existing one had only been used a few months and I tightened up the strap a bit and used more electrolyte. The glitches in connection disappeared but the ZoneSense problems continued.

                            Here’s a screengrab of one run I did - I was dramatically fatigued and the run was weird because I was the slowest I’ve ever been by a huge margin but my heart rate is nearly constantly in the VO2 range - though I used a mostly green zone in the ZoneSense as my guide only to find out at the end of the workout there was absolutely no ZoneSense data or threshold measurements WhatsApp Image 2025-09-22 at 16.57.17.jpeg

                            I’ve never been able to get the ZoneSense to measure the thresholds for running and I never get the data - despite it always working in real time.

                            ZoneSense in contrast frequently locks up in real time when cycling but still measures the thresholds and presents the data covering the entire workout.

                            My 5 Set Zone thresholds are 142 Aerobic and 160 Anaerobic
                            My Cycling ZoneSense values are from 129 to 145 Aerobic and 166 Anaerobic

                            The ZoneSense AT is as frequently above the set AT as below so I don’t change it.

                            1 Reply Last reply Reply Quote 0
                            • Ian BeveridgeI Offline
                              Ian Beveridge @Brad_Olwin
                              last edited by

                              @Brad_Olwin
                              I sent a technically accurate response the day before yesterday and it has simply vanished. It takes a lot of work just to straighten things out but it’s extremely unhelpful if the work is just junked. I’m hoping this is just an oversight and not an unwise censoring.

                              I found out how to get ZoneSense (ZS) data out of my running mode. I had explained that when I monitor ZS data from my watch then I get clear feedback but nothing is stored or accessible later with the phone app and no ZS zones are measured. Today I ran and deliberately did not go the the real time page on my watch - sure enough I get full ZS data on my phone app - with my ZS Aerobic Threshold going up to 156 bpm (I’m in Zone 4 at 151 with the fixed thresholds)

                              At least I can use this as a way round the software bugs and know that I’m aerobic when my fixed Zones tell me I’m somewhere in VO2max. (I probably am aerobic because I’m also ketogenic and so not burning much glucose)

                              Ian BeveridgeI Brad_OlwinB 2 Replies Last reply Reply Quote 0
                              • Ian BeveridgeI Offline
                                Ian Beveridge @Ian Beveridge
                                last edited by

                                @Ian-Beveridge
                                So - today there was a firmware update - correcting the ZoneSense counter bug! (Race S)

                                It just gets weirder!

                                I maintained a heart rate of above 180 bpm for 22 minutes. (Using a Polar H10+ chest strap). Directly from my watch log of the workout there were three clear and sustained significant dropouts (to a slow zone 1 HR) during this period - however after syncing with the Phone App there were no dropouts at all recorded. I saw the watch doing this during the run and after when looking at the logged summary (it’s still present in the watch logbook).

                                Contrary to my previous experience although ZoneSense is active and I didn’t use that page on the watch - there was absolutely no ZS data recorded.

                                I’m wondering if there is a technical issue due to my set Max HR for HR Zone data being set at 184 and due to getting faster I went above this limit up to 192 bpm. It’s the first time in about 7 years (due to knee injuries) that I’ve been able to run fast enough to register above 184 bpm. (Bear in mind I’m 67 yo and before my injuries had a max of 202 and resting 36 bpm).

                                1 Reply Last reply Reply Quote 0
                                • S Offline
                                  Stavrogin @Brad_Olwin
                                  last edited by

                                  @Brad_Olwin I have also experienced this. ZS is great at showing me how fresh I really am. It can been surprising.

                                  Suunto Vertical, Race, Race S and Run Currently using Race 2

                                  1 Reply Last reply Reply Quote -1
                                  • Brad_OlwinB Offline
                                    Brad_Olwin Moderator @Ian Beveridge
                                    last edited by

                                    @Ian-Beveridge I doubt anyone junked it…we don’t do that. I have an iPhone and the only issues I have had is the watch dropping connection to the belt but that is on field test firmware. I do not understand why your data is not recalculated in the app.

                                    Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing/Race2Ti

                                    Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                                    • Ian BeveridgeI Offline
                                      Ian Beveridge @Brad_Olwin
                                      last edited by

                                      @Brad_Olwin Here’s a photo of the workout logged on my watch - with dropouts. And also the graph of the phone app for the same workout.

                                      ZoneSense was activated but nothing made it to the phone app.

                                      watch.jpeg

                                      5K.jpeg

                                      Those two problems exist in the system.
                                      I’ve updated my set max HR to see if it affects the data handling for the next run tomorrow.

                                      Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                                      • Ian BeveridgeI Offline
                                        Ian Beveridge @Ian Beveridge
                                        last edited by

                                        @Ian-Beveridge
                                        Repeated a similar run today - VO2max.
                                        1 - Same problem with no ZoneSense data on the phone app after the sync (verified that it’s selected in the SuuntoPlus menu on the watch)
                                        2- Heart rate data from H10+ chest strap is correct on the phone app but wildly wrong when checked on the watch logbook.
                                        5K2.jpeg
                                        watch 2.jpeg

                                        B Brad_OlwinB D 3 Replies Last reply Reply Quote 0
                                        • B Online
                                          Belial @Ian Beveridge
                                          last edited by

                                          @Ian-Beveridge Maybe it’s just a coincidence, but after a long and flawless “cooperation” between my Vertical and H10, things suddenly went south.

                                          First, ZoneSense became quirky and unreliable. Then the H10 connection to the Vertical started freezing after 20–30 minutes of workouts.

                                          I switched to a warranty-replaced HRM Pro Plus and everything went back to normal. Maybe your H10 is starting to fail too? Mine is over 6 years old, and I think its time has finally come 😉

                                          Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                                          • Brad_OlwinB Offline
                                            Brad_Olwin Moderator @Ian Beveridge
                                            last edited by

                                            @Ian-Beveridge The latest watch image does not look ok, it appears that the HR is flatlining and maybe losing connection.

                                            Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing/Race2Ti

                                            Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                                            • First post
                                              Last post

                                            Suunto Terms | Privacy Policy