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Race Time Equivalent Riegel Calculator
Predict race times at other distances using the Riegel formula.
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Predict race times at other distances using the Riegel formula.
Race Time Equivalent Riegel Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: T2 = T1 x (D2 / D1)^1.06.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Race Quick Guide
Typical values for reference.
| From 10K 50:00 | Distance | Predicted | Pace |
|---|---|---|---|
| 5 km | 5 | 23:30 | 4:42 |
| 10 km | 10 | 50:00 | 5:00 |
| Half | 21.1 | 1:50:15 | 5:13 |
| Marathon | 42.2 | 3:50:00 | 5:27 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Race Time Equivalent Calculator FAQ
Answers to common questions about this calculator.
A prediction that time grows with distance to the power 1.06.
It gives a quick estimate of race time equivalent riegel from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.