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Recording a Critical Swim Speed Test

Your Critical Swim Speed (CSS) value is the result of a time-trial-based test expressed as a pace per 100 meters. Your CSS is the theoretical speed you can maintain continuously without exhaustion. You can use your CSS to guide your training pace and monitor your improvement.

  1. From the watch face, press Upper-right button.
  2. Select Activities > Swimming > Pool Swim.
  3. Press Lower-left button.
  4. Select Training > Workout Library > Critical Swim Speed > Do Critical Swim Speed Test.
  5. Press Lower-left button to preview the workout steps (optional).
  6. Press Upper-right button.
  7. Press Upper-right button to start the activity timer.
  8. Follow the on-screen instructions.
GUID-EECCAC99-90D6-4AB1-9A3A-EC433D3365E2 v1
August 2024
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