Training Zones Calculator
Calculate your personalized training zones for heart rate, power, or pace
Zone Configuration
Your Training Zones
Based on Karvonen Method
Heart Rate Zones
Z1Recovery
125 - 138BPM
Z2Aerobic
138 - 151BPM
Z3Tempo
151 - 164BPM
Z4Threshold
164 - 177BPM
Z5VO2max
177 - 190BPM
Zone Descriptions
Z1: Active recovery, very easy effort
Z2: Aerobic base building, conversational pace
Z3: Tempo work, "comfortably hard"
Z4: Threshold training, sustainable hard effort
Z5: VO2max intervals, very hard