Critical Swim Speed (CSS)

For many triathletes, swimming can be the most challenging discipline to get faster. These same athletes have a tendency to swim nearly the same pace for all training. Despite hours in the pool, they only see small gains in speed. CSS training is a simple way to help an endurance athlete understand pacing, while also improving swim fitness and muscular endurance.  This also serves as a method to test our swim fitness throughout the season.

Enter Time for 200 (meters/yards):

Enter Time for 400 (meters/yards):

Swimming Pool

Swim Session Intensity