Sup, iam Barbara Hardin, Don’t work too hard.

At What Age Do You Start To Run Slower? [Solved]

Well, it looks like age ain’t nothin’ but a number! The data shows that even after 40, runners don’t slow down too much. In fact, they only start to really slow down in their late 70s. Plus, the study models suggest that everyone slows down at about the same rate - around 1% added to their times each year - regardless of how good they are.