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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 START.
  2. Select Pool Swim.
  3. Hold MENU.
  4. Select Training > Critical Swim Speed > Do Critical Swim Speed Test.
  5. Press DOWN to preview the workout steps.
  6. Press START.
  7. Follow the on-screen instructions.
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