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Calculate your running pace per mile or kilometer from race time and distance. Free running pace calculator for marathon training, race planning.
Predict finish time at a new distance based on a recent race result. Free running race predictor calculator for marathon training, race planning.
Estimate VO₂max from a 12-minute Cooper test distance. Free running vo₂max estimate calculator for marathon training, race planning, and pace analysis.
This tool applies a standard formula from the relevant domain. The computation is deterministic — given the same inputs, the result is always identical. The formula accounts for the primary variables that determine the output.
Economy = VO₂ (ml/kg/min) at given sub-max paceThe calculation requires: VO₂max (ml/kg/min), Test Pace (min/mile), Max Heart Rate (bpm), HR at Test Pace (bpm). Each parameter contributes to the final result according to the formula above. Accuracy depends on the precision of your input measurements.
Updated: July 2026
A typical use case demonstrating the calculator with representative values.
→ Calculated result based on the formula and provided inputs
Enter your own values to get a personalized result for your specific situation.
→ Result calculated from your specific input values
Check the expected unit for each input field (shown as suffix). Converting between imperial and metric units before entering values prevents calculation errors.
Ensure denominator values (divisors) are non-zero. The calculator validates this, but understanding which fields cannot be zero helps interpret results correctly.
Estimate running economy (oxygen cost) from VO₂max and race pace. Free running economy calculator for marathon training, race planning, and pace analysis. It applies the calculation formula (Economy = VO₂ (ml/kg/min) at given sub-max pace). For example: vo₂max 52, 7:00/mi at 165 bpm — A typical use case demonstrating the calculator with representative values.