Zone 2 triathlon training builds endurance, efficiency and fatigue resistance across swim, bike and run. It forms the aerobic foundation that supports all higher training zones.

Zone 1 triathlon training focuses on active recovery, helping athletes reduce fatigue while maintaining movement across swim, bike and run. Used correctly, it supports consistency, protects harder sessions and underpins long-term performance.

Triathlon training zones bring structure to swim, bike and run by showing how hard to train and why. Understanding Zones 1 to 5 helps you control effort, manage fatigue and build endurance with clarity and consistency across all three disciplines.