Part 4: Greg talks to the riders about distances, and how even with the same quality of motion on the same line, they are still liable to change much like the roll of a single dice. He encourages the riders to focus less on seeing or creating a distance, and more on creating the same correct canter into the fence, and then addressing the distance that comes up each time over the same jump. He works with one rider to challenge her horse's front end in order to create more power and get more from the hind end at the base of the jump. Greg suggest two of the riders work on making sure they have the same quality of work from the horse on one lead, as they do on the other.