Altitude Performance Calculator

Performance decline from altitude and acclimatization.

Sea-level VO2max (mL/kg/min)

Event altitude (m)

Acclimatization days

Sea-level pace (min/km)

Race distance (km)

Tab to move between fields

Altitude VO2max

40.6

VO2max decline (%)9.8

Altitude pace (min/km)6.12

Pace slowdown (%)11.2

Time loss (min)6.2

Heart rate increase (%)15

Barometric pressure (kPa)70.1

Est. SpO2 (%)96

How to Use This Calculator

Enter Sea-level VO2max (mL/kg/min), Event altitude (m), and Acclimatization days.
Set Sea-level pace (min/km) and Race distance (km).
Review the Altitude VO2max result.
Use VO2max decline (%) and Altitude pace (min/km) to inform your decision.

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