Critical Swim Speed (CSS) refers to the theoretical swimming speed that can be maintained for 1500m. It is a crucial metric for swimmers, particularly triathletes, as it provides a benchmark for their aerobic fitness in the water.

How to measure your CSS pace:

To prepare for swimming at a fast pace, make sure to warm up properly in the pool. 

1. Begin with a 400m time trial, starting from a push (not a dive), and note down your time.

Take sufficient rest or recovery after the 400m trial to fully recover and be prepared for a maximum effort in a 200m time trial.

2. Swim a 200m time trial, starting from a push (not a dive), and record your time.

CSS Pace Calculator

CSS Pace Calculator




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Brenton and Mitch were great to work with at the clinic, Good to get video analysis to work on straight away, practice some new drills and go home knowing what you need to work on.

Alex McFadyen

Sydney

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