This calculator will help you to predict your race time based on a previously completed race. It is based on the formula created by Peter Riegel. For details on the formula and the math read the how to guide.
Input Data
| Completed Race |
5 km 10 km half marathon marathon |
||
|---|---|---|---|
| Finish Time | |||
| min | |||
| sec | |||
| Target Race |
5 km 10 km half marathon marathon |
||
| Riegel Constant | |||
Results
| Predicted Time | :: hours |
|---|


