Marathon Finish Time Predictor
Predict your marathon, half-marathon or 10K finish time from a recent race using Riegel's formula.
Riegel's formula
Tโ = Tโ ร (Dโ / Dโ)1.06. Most accurate when training is similar across distances and the new distance is within 2โ3ร the known distance.
Frequently Asked Questions
Is the Marathon Finish Time Predictor free to use?
Yes, the Marathon Finish Time Predictor is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.
Is my data safe when using the Marathon Finish Time Predictor?
Absolutely. All calculations performed by the Marathon Finish Time Predictor happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.
How accurate is the Marathon Finish Time Predictor?
Our Marathon Finish Time Predictor uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.
Can I use the Marathon Finish Time Predictor on my mobile phone?
Yes! The Marathon Finish Time Predictor is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.