Zone 2 Running Heart Rate
Zone 2 is commonly used for easy aerobic running, but the exact range depends on how zones are defined.
Last updated: May 30, 2026
What Zone 2 Means Here
In Running Toolkit, Zone 2 is 60-70% of maximum heart rate. This is a simple percentage-of-max model.
Other coaches and devices may define Zone 2 from lactate threshold, heart-rate reserve, or ventilatory thresholds.
Why Age Formulas Are Limited
Age-estimated max heart rate can be far from an individual runner's true maximum.
If you know your tested max heart rate, use it instead of the age estimate.
How to Apply Zone 2
Use Zone 2 as a broad easy-running target, then cross-check with breathing, perceived effort, and recovery.
Heat, dehydration, caffeine, fatigue, and sensor issues can push heart rate higher than expected at the same pace.
Related Calculators
Heart Rate Zone Calculator
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