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fenix 5x GPS to distance discrepancy

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  • fenix 5x GPS to distance discrepancy

    at least the fenix 5x has a problem (or is this a feature?) with the recorded distance in comparison to the GPS-track.
    Determiantion of the distance out of the GPS-track leads to a different total distance!
    My sunday-run of 21,1 km (running wearing fenix 5x, fenix 3 HR and Polar V800) had the following result:
    - fenix 5x displayed 20,88 km and measuring a track length of 21,16 (checked within excel and GPS-Track-Analyzer).
    - fenix 3HR displayed 21.07 km and measuring a track length of 21,23km (same as above).
    - Polar V800 displayed 21,11 km and measuring a track length of 21,13km (same as above).
    The worst deviation is km 14:
    - the track is shown (within google earth) nearly the same - no severe deviation
    - start-distance (13km-flag from kml-file) 3HR to 5x (3HR ahead):33m (determined by googel earth)
    - end-distance (14km-flag from kml-file) 3HR to 5x (3HR ahead):157m (determined by googel earth; linear measered)
    And this is what the 5x told me during the race: that I needed about 35 seconds longer for this km!!

    I did not check all gps-tracks for their real length, but in fact I have very often severe distance deviations fenix 5x to 3HR (Polar V800 very similar to 3HR), two weeks before there was a deviation of over 500metres!

    That the distance shown is shorter thane real is unacceptable. Some competitions fenix 5x recorded 20,8 km instead of 21,093km , e.g.

    Resetting the 5X is the first suggestion of GARMIN!

    No improvement!

    I'm really disappointed from 5x. - Since I evaluated some tracks I know that there must be a software problem (calculation problem).
    Attached Files
    best regards

    beta-L-user

  • #2
    Hi, Fenix 5X tracks are horrible. These days I have been analyzing tracks and....poor tracks. Its not problem of reseting its problem of fenix 5x.
    Regards

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    • #3
      I noticed that too in the 5, are you using 1s or smart logging? It should be the same result but one never knows.

      What is strange is that is a pure sum error and not GPS problem.
      It looks like a roundup problem due to the points being too close.
      Last edited by jose.cboliveira; 02-07-2018, 04:20 PM.

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      • #4
        try changing 1s recording VS. smart recording .
        glonass: off !

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        • #5
          Originally posted by jose.cboliveira View Post
          I noticed that too in the 5, are you using 1s or smart logging? It should be the same result but one never knows.

          What is strange is that is a pure sum error and not GPS problem.
          It looks like a roundup problem due to the points being too close.
          I use 1s.
          Yes it seems to be a sum error.
          Same settings with 3HR and 5x, but 5x's results are worse.

          half marathon / competition ends up with 20,8 kms (instead of 21,1km). - and I'm sure that it is impossible to stay on the shortest track!
          attached you'll find two tracks - comparing the good track from my Polar V800 and the bad one from fenix 5x! unbelievable!
          best regards

          beta-L-user

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          • #6
            I’m having the same issues.

            3 5k Park runs with a 5x and it reports them as 4.6km. Have tried with Glonass on and off.

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            • #7
              If you have the 5X have you checked whether it is set to try and follow rods or not? I was doing some orienteering a few weeks back and the track was completely bananas - it showed me hundreds of meters from where I knew I had run... turns out I had follow roads on and the watch subsequently tried to move me out to the closest road, although I was running in the woods. After changing that it was much better.

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