User level: Level 2 (174 points)UW3 running os27 now shows walking distance to be about 20% less. From UW1 on os9 to UW3 on os26, no issues (those are the only two watches I've had).
How do I fix this?
Outside 20 minute walk to calibrate did not fix this.
Posted on Sep 16, 2026 6:20 PM
User level: Level 2 (174 points)Sep 19, 2026 12:54 AM in response to Ingo2711
I reset the fitness calibration in the watch app on the phone and then did another outside walk for about 30 minutes. That measured distance looked good. I then did a walk inside and the distances are now consistent with what I saw before.
User level: Level 10 (93,009 points)Sep 16, 2026 11:47 PM in response to Patrick123
As far as I remember, Apple optimised the step count in workouts in the Fitness App / Apple Watch in the latest WatchOS/iOS 27 upgrade.
To let Apple Techs directly about your findings, please use the Feedback link, so that they can look into that and implement a fix in an upcoming update:
Originally posted at discussions.apple.com/thread/256358596