🛠️ Race Finish Time Predictor Race Finish Time Predictor 🏅 Race Finish Time Predictor Enter a known race result and predict your finish time for any distance — using the Riegel formula. Your Known Race Result 5K 10K Half Full Your Finish Time Hours Minutes Seconds Target Race 5K 10K Half Full Predict My Finish Time → Predicted Marathon Time — — 🏁 All Race Predictions 📏 Per-5K Split Targets ← Recalculate