Marathon Time Predictor
Predict your marathon finish time based on a shorter race result using the Riegel formula.
Predicted Marathon Time (min)
240.2 minutes
Predicted Marathon Time (min) vs Recent Race Time
सूत्र
## Riegel Formula **Predicted Time = Race Time x (Target Distance / Race Distance)^1.06** The Riegel formula, developed by Peter Riegel in 1977, accounts for the fact that pace slows as distance increases. The exponent 1.06 captures this endurance fatigue factor.
हल किया गया उदाहरण
A runner who completed a 5K (3.1 miles) in 25 minutes.
- 01Marathon distance = 26.2 miles
- 02Distance ratio = 26.2 / 3.1 = 8.452
- 03Predicted time = 25 x 8.452^1.06
- 04= 25 x 9.55 = 238.7 minutes
- 05= 3 hours 58.7 minutes
- 06Pace = 238.7 / 26.2 = 9.11 min/mile
अक्सर पूछे जाने वाले प्रश्न
How accurate is the Riegel formula?
The Riegel formula is reasonably accurate for well-trained runners. It may overestimate for beginners and underestimate for elite runners.
Does training matter?
Yes. This prediction assumes you train adequately for the marathon distance. A 5K time alone does not guarantee marathon performance without proper long-run training.
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