Not tracking distance of runs or biking accurately

[J.Nelson2409]

I have noticed over that past 3 weeks or so the my FitBit Versa has not been tracking my runs accurately. This was confirmed today after going on a 4 mile run and my fitbit said I only went 3.26 miles. I also noted yesterday that it tracked my 10.5 mile bike ride as 0.5 miles. Please help! How can I fix this?? 

Moderator edit: subject for clarity

[LiliyaFitbit]

Welcome to the Fitbit Community @J.Nelson2409. I am sorry for the delayed response. 

I appreciate your participation in the Forums and sharing that your Fitbit Versa has not been tracking your exercises accurately. Thank you for providing the details of your run and bike ride. Fitbit trackers calculate distance by multiplying your walking steps and walking stride length. Similarly, your running steps are multiplied by your running stride length. This will not necessarily match a pre-measured distance, nor will it show exactly what a GPS device will show. You can enter your personal stride length to make the distance calculation more accurate: How do I measure and adjust stride length for my Fitbit device?

If you would like to edit an exercise or activity, you can follow these steps: How do I edit or delete an exercise or activity in the Fitbit app?

Upon checking with our Support team, I was told that you have already contacted them. I know they will be glad to help you out and provide you a solution, please keep working with them. 

If you have any questions, feel free to let me know.