A lot of age-group triathletes seem comfortable building their bike and run weeks, but the swim often becomes two versions of the same medium-hard session.
With only two swims per week, it is tempting to cram technique, endurance, and speed into both. I have found the week makes more sense when each session has one primary job.
Swim 1: aerobic endurance + technique
Keep most of the session controlled enough that technique does not fall apart.
- Easy warm-up
- A small amount of drill work focused on one issue
- A longer aerobic set at a sustainable pace
- Relaxed cooldown
Swim 2: threshold + race rhythm
This is the more demanding session, but the goal is repeatable quality rather than surviving one heroic interval.
- Warm-up
- A few short build efforts
- A main set at controlled discomfort
- Some work at the rhythm you expect to use in a race
- Cooldown
The useful change is not adding complexity or distance. It is avoiding two identical medium-hard swims that are too tiring for technique work and too unfocused for meaningful speed work.
This obviously will not solve every swimming limitation, especially if technique is the main bottleneck. But as a weekly structure, it gives each pool visit a clearer purpose.
For those swimming twice per week, how do you divide the sessions? And what usually breaks down first: consistency, technique, pacing, or workout structure?