Procedure
Each horse performs individually. There are usually four patterns from which a judge may choose, all containing a walk, a jog, a jog over a log, a lope, a lope over a log, a jog to lope transition, a large serpentine with four "crossing lead" changes, a shallow serpentine with 3-4 line lead changes, a halt and a rein back. All lead changes are required to be completed within the designated lead change area.
Read more about this topic: Western Riding (horse Show)