Calibrating the Treadmill Distance

To record more accurate distances for your treadmill runs, you can calibrate the treadmill distance after you run at least 2.4 km (1.5 mi.) on a treadmill. If you use different treadmills, you can manually calibrate the treadmill distance on each treadmill or after each run.

  1. Start a treadmill activity (Starting an Activity).
  2. Run on the treadmill until your Approach® S50 watch records at least 2.4 km (1.5 mi.).
  3. After you complete your run, press Top button.
  4. Check the treadmill display for the distance traveled.
  5. Select an option:
    • To calibrate the first time, enter the treadmill distance on your watch.

    • To manually calibrate after the first-time calibration, swipe up, select Calibrate, and enter the treadmill distance on your watch.

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October 2025