Showing results for 
Search instead for 
Did you mean: 
Status: Gathering Kudos

There is a problem with Garmin treadmill uploads to Strava whereby at the end of a run, you calibrate the distance based on the actual treadmill distance and the watch then uploads the recalibrated distance to Garmin Connect.

When synced with Strava however, Strava shows the uncalibrated distance, which can be a long way off. This seems to have been a problem for a long time, going by the age of the thread on the Garmin forum (5 years to be precise).

It would be great if the calibrated distances appeared on Strava.

Pico de Orizaba

I hadn't used a treadmill in years, so no telling when Garmin added the calibrate function.  They (Garmin Support) openly admit that their fitness tracking devices aren't as accurate at calculating distance without the aid of GPS.  To your first question though, on my lone treadmill activity in July of 2022, I did experience roughly .3 miles of distance disparity between Garmin and STRAVA, 7.57 miles to 7.26 respectively.  Duration of activity was spot on (1hr:00min:31secs), but because of the difference in distance, pace was about 20 seconds off (read: slower) per mile.  Sorry this isn't much of an answer, but perhaps it's the way the original .FIT file is parsed by STRAVA?  


I do about 50/50 road/treadamill and my first treadmill run with a Garmin 255 (with dynamics pod) was 2km out on a 10k run, so not good! Fine if you just use Garmin Connect to view your activities as that shows calibrated distance, something isn't quite right when Connect syncs with Strava and the uncalibrated value comes back.

It's an otherwise good watch but when I lose a feature that worked perfectly on my TomTom, it's a bit grating, particularly as these things aren't cheap.

We're trying to progress a fix with Garmin but if it's a 5 year old problem, I'm not holding my breath. If Strava devs read these threads perhaps they can confirm if they've heard about this issue or not and whether there's any helpful info I can pass back to Garmin to help things along, that would be good.

Status changed to: Gathering Kudos
Community Manager Community Manager
Community Manager
Mt. Kenya

Same issue here.  Garmin says the calibrated data is in the FIT file.  Strava – please use that value.


Agree, this would actually be a really good feature.
Many times I have had to delete the Strava treadmill entry that was imported from Garmin and add a manual activity to honestly reflect the treadmill distance I ran. This isn’t ideal as you lose the HR, cadence data etc. 

Mt. Kenya

I have the same issue. I tried reuploading the .fit file but it was the same, pre-calibrated run.