Running Pace Calculator
Pace, speed and finish-time predictions in one place. Use the Riegel formula for race targets across 5K, 10K, half and full marathon.
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Pace breakdown
Race-time predictions
| Distance | Predicted time | Pace /km |
|---|
Predictions use the Riegel formula T₂ = T₁ × (D₂/D₁)^1.06, a standard endurance prediction model. Actual race times depend on course profile, weather and training.
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Also try:
Age Calculator ·
World Cup distances.