Race Predictor Calculator
Predict your race times for different distances based on recent performances.
Recent Race/Time Trial
hours
minutes
seconds
Your pace: 5:00/km
Race Time Predictions
Based on your 10K in 50:00
5K
5 km
23:59
Cameron: 51:59
10K
10 km
50:00
Cameron: 50:00
Half Marathon
21.0975 km
1:50:19
Cameron: 47:19
Marathon
42.195 km
3:50:01
Cameron: 43:08
About Race Prediction
Race predictions use mathematical formulas to estimate performance at different distances based on a recent performance. The two most common methods are:
- Riegel Formula: T2 = T1 x (D2/D1)^1.06 - widely used and accurate for most runners
- Cameron Formula: More complex, may be better for shorter distances
Note: Predictions assume equivalent training for both distances. Marathon predictions from 5K times are less reliable than from half marathon times.
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