Running Pace Calculator (with Race Predictions)
Running pace calculator: pace per km and per mile and speed from distance and time, plus predicted 5K, 10K, half marathon and marathon times.
pace = timedistance
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
Pace = time ÷ distance. Race predictions use Riegel’s formula T₂ = T₁ × (d₂/d₁)^1.06.
Frequently asked questions
10 km in 55:00: what pace and marathon time?
5:30 per km; predicted marathon about 4:13.
Related calculators
- Body Fat Calculator (US Navy Method)
- Heart Rate Zone Calculator (Max HR, Karvonen)
- Pregnancy Due Date Calculator
- Sleep Calculator (Bedtime & Wake-Up Time)
- Ovulation Calculator (Fertile Days)
- Macro Calculator (Protein, Carbs, Fat)
- Protein Intake Calculator (How Much Protein Per Day?)
- One Rep Max Calculator (1RM)
Last updated: · Report an error