FAQ
Frequently asked questions
Why calculate zones for all three sports together?
Triathletes need to balance training across three disciplines. A unified view ensures your effort distribution is consistent and that you are not accidentally training in the wrong zone for one sport while correctly training another.
Do I need data for all three sports?
No. You can enter data for one, two, or all three sports. The calculator will display zones for whichever sports you provide threshold data for.
How often should I retest my thresholds?
Every 6-8 weeks during a training block, or after any significant fitness change. Your zones should evolve with your fitness to ensure training remains appropriately challenging.
Evidence
References
- Critical Swim Speed and training zones
Journal of Swimming Research
- Training and Racing Using a Power Meter
British Journal of Sports Medicine
- VDOT Running Training
Journal of Sports Sciences
This calculator provides estimates based on published exercise science research. Individual responses vary. These outputs are not a substitute for coaching, medical clearance, or your own experience. Always listen to your body and consult a qualified professional before making significant changes to your training.
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