Apple Watch suddenly way off on treadmill

I have always used my watch to track indoor runs and it has always been very accurate to the treadmill and within line of what my pace is for outdoor run.

last week, suddenly, it is now saying I am running my miles 2 min slower. I have reset workout data and recalibrated outside but I am still not getting accurate data.

today my run was 0.60 miles shorter than the treadmill.

what is the issue and how can I resolve it?

Apple Watch Series 3, watchOS 6

Posted on Sep 21, 2020 9:48 AM

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Apple Watch suddenly way off on treadmill

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