Inspire HR inaccurate GPS distance tracking with Fitbit app

[zainazri]

New user here. Fitbit seems to show an exaggerated distance for my run versus actual distance.

I run regularly on a track with pavement markers, which means i am able to accurately gage the distance of my runs. For my run today, on the watch and app shows i ran 12.59km, but I am pretty certain I ran plus minus 10km. I exported the TCX file and used an online GPS tracker (sunearthtools dot com) to track the exact distance, it shows 9.47km. Using pavement markers, I noticed that for every 3km I ran, fitbit watch shows I have run approximately 3.75km. 

Previously, i have used endomondo for distance tracking, and it does tally with the pavement markers on the track. I noticed the fluctuation/difference between the watch and my actual runs before, but this is the first time I actively checked the distance.  A previous run showed a discrepancy between 8.26km (on fitbit watch and app)  and 7.74km (on endomondo and accurate as checked on Google Maps manually). Similarly I've counterchecked on the same online GPS tracker i mentioned earlier, it accurately shows 7.74km as per endomondo. 

Noticed this issue on multiple threads, but I couldn't find the solution. 

For clarity, I'm using a Oneplus 6T phone, Android 10. Stride length is automatic. GPS switched on both phone and watch. Waited until GPS connected before starting my run. Wifi switched off (just in case)

Moderator edit: updated subject for clarity

[AlvaroFitbit]

@zainazri Thanks for joining us! 

Let me help you with your GPS distance calculation using your Fitbit app. Since the Inspire HR doesn't have a GPS chip it uses your phone's chip so I suggest we try clearing the link between them by doing the following:

1. Go to your phone's bluetooth settings and remove all devices listed there.
2. Restart your phone and restart your device. 
3. Check that no battery saving app/feature on your phone is affecting your Fitbit app.
4. Also, on an Android device, check that your app has the necessary permissions (settings > apps > Fitbit > permissions) and make sure bluetooth and location services (GPS) are on. 
5. You can find troubleshooting instructions here.

Let me know how it goes.