Heart Rate Zone
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Joe Friel's Latctate Threshold Heart Rate Zone Calculator
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ZONELOWERUPPERLOWERUPPER
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Zone 180140Less than 85% of LTHR85% of LTHRrecovery
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Zone 214014785% of LTHRATHR
foundation(conversation pace)
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Zone 3149155ATHR(ATHR + LTHR) / 2
steady state(marathon pace effort)
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Zone 4157163(ATHR + LTHR) / 2LTHR
interval work, 10k effort
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Zone 5a165168100% of LTHR102% of LTHR
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Zone 5b170175103% of LTHR106% of LTHR
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Zone 5c175and upMore than 106% of LTHR
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ENTER LACTATE THRESHOLD HR AVERAGE165
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https://www.trainingpeaks.com/blog/joe-friel-s-quick-guide-to-setting-zones/
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Functional Threshold Pace (FTP) is the averate heart rate for the entire 30 minutes of time trial.
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