General warm-up (45-60 minutes out)
This phase is the same regardless of your event, because its only job is raising your core temperature and opening up the joints and muscles you are about to ask a lot of. An easy jog of 800 meters to a mile gets blood moving without any real fatigue cost. Dynamic stretching and A-skips or B-skips open the hips and mobilize the ankles in a way static stretching does not. Athletes who tend to peak slowly should start this phase earlier rather than rush it, since a cold body wastes the sharper work that comes later.

