Race Time Predictor
Estimate race time from your measurements.
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What this tool does
Estimate race time from your measurements. Riegel extrapolation assumes comparable conditions and adequate endurance training; not a guarantee.
How to use the Race Time Predictor
- Enter or select known race distance (km).
- Enter or select known race minutes.
- Enter or select target distance (km).
- Enter or select riegel exponent.
- Read the calculated result; change any measurement to compare alternatives.
Formula
predicted minutes=known time×(target distance/known distance)^exponent
- distance
- Known race distance (km)
- time
- Known race minutes
- target
- Target distance (km)
- exponent
- Riegel exponent
Riegel extrapolation assumes comparable conditions and adequate endurance training; not a guarantee.
Worked example
For race time predictor, the following measurements illustrate the exact method: Known race distance (km): 5; Known race minutes: 25; Target distance (km): 10; Riegel exponent: 1.06.
Inputs
- Known race distance (km)5
- Known race minutes25
- Target distance (km)10
- Riegel exponent1.06
Result
- Predicted race minutes52.12
Results explained
- Predicted race minutes
- Predicted race minutes from the formula above. Riegel extrapolation assumes comparable conditions and adequate endurance training; not a guarantee.
Frequently asked questions
predicted minutes=known time×(target distance/known distance)^exponent
Riegel extrapolation assumes comparable conditions and adequate endurance training; not a guarantee.
No. These are general-information estimates, not diagnosis, treatment, fertility advice or exercise clearance. Consult a qualified health professional.
Individual physiology, measurement technique and health conditions may cause large differences from model estimates.
No. BAC estimates never establish that driving is safe or legal; do not drive after drinking.