Critical Swim Speed
Critical Swim Speed
—
Top picks compared
| Pick | Product | Best for | |
|---|---|---|---|
| Top pick | Waterproof Swim Watch | Time your 400m and 200m trials accurately and track CSS over time. | Check price → |
| Option | Tempo Trainer Pro | In-cap beeper to hold your CSS pace precisely during threshold sets. | Check price → |
| Option | Swim Training Log Journal | Record time trials and CSS sets to chart your threshold improvement. | Check price → |
As an Amazon Associate we earn from qualifying purchases. Prices shown on Amazon at time of click.
Frequently asked questions
How do I use CSS in training?
Swim threshold sets at your CSS pace per 100m, do speed work faster than CSS, and easy/recovery swims slower. Re-test every few weeks to track improvement.