This post goes into detail about everything you need to know regarding easy running. First, let me start with defining "easy pace" as it relates to running. Easy running is a pace that you can withstand for a long duration and is aerobic in nature, meaning done with oxygen, without producing an amount of lactate that would cause fatigue in the working muscles. This pace is different for everyone, depending on you level of fitness. The term can confuse runners for a number of reasons, especially those that are new to the sport. Running is not easy, but this pace is easy, or should be easy relative to the work that will be done at other paces. Most of a athletes training should be done at a easy pace.