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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11If your Apple Watch Ultra route is missing or your workout distance seems wrong, first check location settings, then test outdoors with a clear view of the sky and calibrate with a matching Outdoor Walk or Outdoor Run. The Ultra uses its own built-in GPS even when your iPhone is nearby, so carrying the phone is not a GPS fix.
Start by identifying what is wrong
Different symptoms can point to different parts of the tracking process. These checks help narrow down what to try; they do not prove a particular component has failed.
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- Route gaps or GPS drift: Check Location Services and satellite visibility.
- Distance or pace that seems off: Check that you selected the right outdoor workout and calibrate in an open area.
- Activity movement or Exercise credit that seems low: Activity tracking also depends on arm movement, so check how the watch is worn and how naturally your arm can swing.
Check the iPhone location and calibration settings
On the iPhone paired with your watch, open Settings > Privacy & Security > Location Services and make sure Location Services is on. Then open System Services and make sure Motion Calibration & Distance is enabled. Apple lists these settings in its Apple Watch calibration guidance.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Test GPS where the watch can see the sky
Take the watch to a flat, open outdoor area with a clear view in several directions. Walls, vehicle roofs, tall buildings and mountains can block satellite signals. Apple says GPS accuracy depends on the number of visible satellites, and the watch may need several minutes to locate them. Give it time before judging the route or distance. See Apple’s Location Services guidance.
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Calibrate with the workout you actually do
For walking
Open Workout and start Outdoor Walk in an open area with good GPS reception. Walk at your normal pace for about 20 minutes.
For running
Start Outdoor Run under the same favorable outdoor conditions and run at your normal pace for about 20 minutes. If you want better accuracy at more than one walking or running speed, Apple recommends recording about 20 minutes at each speed.
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These are Apple’s calibration instructions, not a guaranteed fix or a performance benchmark. See its calibration article and Workout settings guide.
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Use the right tracking method and wear the watch comfortably
Workout and Activity do not rely on exactly the same signals. Apple says a Workout can use the accelerometer, heart-rate sensor and GPS, while Activity relies on arm motion and an accelerometer. Choose the workout that matches what you are doing; during a walk, let the watch-wearing arm swing naturally when practical. Apple’s guidance on getting accurate Apple Watch measurements explains these differences.
Reset calibration data only if the earlier steps do not help
If settings, open-sky testing and a calibration session have not improved the result, you can reset the stored fitness calibration data and calibrate again. In the iPhone Watch app, go to My Watch > Privacy > Reset Fitness Calibration Data, then repeat the outdoor workout calibration. This resets calibration data; it does not diagnose or repair GPS hardware. Apple documents the reset in its calibration guidance.
If the problem continues
If routes remain missing or inaccurate after these checks, contact Apple Support for a case-specific diagnosis. The symptoms alone do not establish that the watch needs a particular repair or replacement part.
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