Enter your highest 20 minute average or normalised power to calculate your power based training zones: - Active Recovery(Easy spinning or light pedal pressure) - Endurance(All day pace) - Tempo(2.5 to 8 hours) - Lactate Threshold(10 to 60 minutes) - VO2 Max(3 to 8 minutes) - Anaerobic Capacity(30 seconds to 3 minutes) - Neuromuscular Power(5 to 30 seconds) Features: - Calculate power training zones based off your Functional Threshold Power (FTP) - 7 Training zones - Adjust FTP percentage of 20 minute power - Functional Threshold Power - Power to Weight (Watts per Kilogram) - Free to use Good for road cycling, triathlon, mountain biking to calculate the correct power training zones.