Aerobic Capacity

Aerobic capacity, not speed, is usually the limiting factor in how fast you can race, even for a distance as short as the 5K.

This classic test for V02max is fun challenge that provides useful data about your fitness.

Speed work will raise your aerobic capacity, but to improve performance, you need every piece of the fitness puzzle.

A mathematical model is designed to help runners pace their marathons appropriately.

Gorging on carbs before a race may not be as necessary as you think.

There are many ingredients in the recipe of running fitness.

Chances are you are slower over very short distance than your couch potato twin.

One study suggests that runners who rely on less muscle activation actually go faster.

A study finds that runners maintain their running economy despite losing speed as they age.

Galen Rupp is going to be switching things up this year.