How it works
Fill in the 3 fields above and Race Time Predictor calculates the result instantly, recalculating as you change any value. It applies the formula T₂ = T₁ × (D₂/D₁)^1.06. The math runs locally in your browser — nothing is sent to a server.
Formula
T₂ = T₁ × (D₂/D₁)^1.06Examples
- Known distance 5 km, Known time 25 min, Target distance 10 km → Predicted time: 52m 7s
Frequently asked questions
How do I use the Race Time Predictor?
Enter your values in the 3 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Race Time Predictor use?
It uses T₂ = T₁ × (D₂/D₁)^1.06. The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Race Time Predictor runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Race Time Predictor free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on health & fitness and the rest of the platform, you can use it as often as you like.
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