Peter Riegel

Peter Riegel was an American exercise physiologist who developed a widely used formula to estimate how long it will take to finish a race based on a previous performance. His formula accounts for fatigue and pacing, providing a realistic prediction when attempting a longer or different race distance. It’s especially helpful for athletes planning training or setting goals, as it offers a scientific basis for estimating finish times across various race distances. Riegel’s work has become a foundational tool in endurance sports, allowing runners and cyclists to forecast their performance and adjust their training accordingly.