Race Predictor – Running Time Calculator
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Race Predictor – Running Time Calculator

Estimate finish times at new distances using the Riegel formula

📖 Race Predictor – Running Time Calculator

Riegel predicts performance: T₂ = T₁ × (D₂ ÷ D₁)^1.06. Enter a recent result and the target distance.

📊 Result

💡 Tips & Information

  • Use a recent all-out performance for best accuracy.
  • Adjust exponent (1.03–1.08) based on personal endurance bias.
  • Riegel assumes even pacing and good race conditions.
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