Set a cone up 20 yard away from your starting position then 4-6 speed hurdles on the ground. The athlete wants to accelerate and transition into full strides before hitting the speed hurdles.
The Transitional phase is when a gradual change in running mechanics occurs between late acceleration and early, absolute top-end speed. This phase normally takes place between the 10- and 20-yard markers.
As the athlete begins to accelerate, the body slowly becomes more upright. The head moves from the tucked to the forward position, the hips become tall and the torso erect. An upright stance causes the stride to naturally lengthen and begin to develop.