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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. 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, select START > Pool Swim > Options > Critical Swim Speed > Do Critical Swim Speed Test.
  2. Select DOWN to preview the workout steps.
  3. Select OK > START.
  4. Follow the on-screen instructions.
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