| Zone | Range | Purpose |
|---|
How the math works
Cycling uses Coggan 7-zone model anchored on FTP. HR zones use Joe Friel anchored on LTHR (or 85% of HRmax). Running uses McMillan-style pace ranges anchored on threshold pace.
Generate Z1–Z5 training zones from threshold HR, cycling FTP or running threshold pace. Coggan power zones, Friel HR zones and McMillan pace ranges in one tool.
| Zone | Range | Purpose |
|---|
Cycling uses Coggan 7-zone model anchored on FTP. HR zones use Joe Friel anchored on LTHR (or 85% of HRmax). Running uses McMillan-style pace ranges anchored on threshold pace.
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