Can You Edit Apple Watch Workout Distance?

Why Apple Watch workout distance is hard to edit

Apple Health stores workouts as structured HealthKit data. A saved workout can include distance, duration, energy, heart rate samples, route data, laps, events, and metadata. For privacy and data integrity reasons, third-party apps do not get a simple "change this workout distance" button for the original Apple Watch workout.

That matters most for treadmill runs and indoor walks. If your treadmill says 5.00 km and Apple Watch saves 4.62 km, the incorrect distance affects pace, splits, and weekly totals.

What you can do instead

1. Open Fix My Treadmill and choose the Apple Watch Indoor Run or Indoor Walk.
2. Enter the real treadmill distance shown on the machine.
3. Review the corrected pace and splits.
4. Save a corrected workout copy to Apple Health.
5. Open Apple Fitness and delete the original workout if you do not want two entries.

Should you delete the original workout?

If you keep both workouts, Apple Fitness may show both entries and your totals can be counted twice. If you want a clean history, delete the original Apple Watch workout after confirming the corrected copy looks right.

When deleting in Apple Fitness, choose the option that removes the workout entry without deleting unrelated Health data unless you are sure that is what you want.

What changes in the corrected copy?

Fix My Treadmill recalculates distance-based values such as pace and split timing from the corrected distance and the original workout duration. Heart rate and calories are preserved where HealthKit allows it instead of being guessed from the new distance.

Related guide

For the full treadmill workflow, see how to fix wrong Apple Watch treadmill distance.