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Running Calculator

Enter your most recent race with the conditions you ran it in. Then set the conditions of a hypothetical race to see what you could run. Based on the Daniels & Gilbert VDOT model with empirical altitude, temperature, wind and elevation corrections.

Units
Your actual race

The race you ran, with the conditions you ran it in.

Race
Distance
Finish time
Conditions
Altitude
Temperature
Headwind ?
Course profile
Course type
Total uphills
Total downhills
Incline grade
%
Your hypothetical race Copy from actual

A race you'd like to predict. Change any variable to see how your performance would differ.

Race
Distance
Conditions
Altitude
Temperature
Headwind
Course profile
Course type
Total uphills
Total downhills
Incline grade
%
Actual race — Stats
Distance
Time
Pace / 400 m
Pace / km
Pace / mile
Speed (km/h)
Speed (mph)
%VO₂max?
Hypothetical race — Predicted stats
Distance
VDOT?
Pace / 400 m
Pace / km
Pace / mile
Speed (km/h)
Speed (mph)
%VO₂max?
Suggested Training Paces ?
Workout ? Pace (min/400m) Pace (min/km) Pace (min/mile)