Running Pace & Race Predictor
Pace per km and mile plus predicted race times.
Your result
Race predictions use the Riegel formula and assume similar training for longer distances.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Find this tool when you want to:
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Frequently asked questions
What does the Running Pace & Race Predictor do?
Pace per km and mile plus predicted race times. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: what pace do i need; predict my marathon time; 5k to 10k time; running speed.