Mileage Matters.

Here is an article I wrote for Stack.com this summer.

How Increasing Mileage Makes You a Faster Runner

Adequate mileage isn't the only component needed to perform your best in distance running, but it just might matter the most.

https://www.stack.com/a/mileage-matters-how-far-do-you-need-to-run-to-get-good-at-running