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, 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. Select OK.
7. Press START.
8. Follow the on-screen instructions.