Peak sprint performance is in one's twenties, peak marathon performance is on one's thirties. Source: Usain Bolt and Elioud Kipchoge. You can find tons of fin

Peak sprint performance is in one's twenties, peak marathon performance is on one's thirties. Source: Usain Bolt and Elioud Kipchoge. You can find tons of finish times with age for running events online to show how the degradation in performance falls slowly with age for marathon times. It's actually hard to find information on sprint times for older competitors because the participation rate is much lower. There is a significant body of research that indicates humans have significant advantages for endurance performance versus other mammals. Born to Run is the classic popular book about the subject and has references to the primary sources.