Race Time Predictor

The Race Time Predictor is a running performance tool that uses the Riegel formula to estimate your potential race times across different distances. Whether you're a competitive runner or casual jogger, this tool helps you set realistic goals and plan your training by predicting how fast you can run based on your previous race performance. Simply input a known race time and distance, and discover what you might achieve at other distances.

Start by entering a race distance and time that you've already completed. The tool applies the Riegel formula, a scientifically-backed equation that predicts running performance across distances. Select the target race distance you want to predict, and the calculator instantly shows your estimated finish time, helping you plan training and set achievable goals.