Found this at “Reflections on Riding” by Kate and thought it very informative in light of upcoming clinics….There is a best distance between cavaletti for every horse, at every gait. Those distances may get uniformly longer or shorter depending on the horse’s level of training, but this should be intentional, not random. If you vary the distances between cavaletti or if you choose the wrong distance to begin with, you undermine the best use of these training aids.
When you’re ready to set out your cavaletti, get out a tape measure, the way course designers do when they’re building a course of jumps, and use it to measure a true distance. If you’ve got a measuring wheel, that’s nice and easy and it’s handy for building courses later. If not, a 30′ tape measure will do, and will see you through building gymnastics (when you’ll be varying the spacing quite a bit, but that’s down the road.)
Before you can figure out how to train your horse over cavaletti, you have to figure out your horse’s natural stride. Which means you need to be able to create and recognize your horse’s best walk, working trot, and canter.
Dismount to measure the distance (if you’re using a metal tape measure, you might want to de-spook your horse to the sound first, because a lot of horses think it’s a monster, especially when it retracts). Or ask a friend to measure the distance for you, toe to toe. Write down the distances, because the last thing you want to do is repeat this exercise. (Later on, when you want to measure your horse’s natural jumping stride, you can follow a similar procedure, but you’ll be measuring from the point of takeoff to the point of landing.)
Set up your cavaletti so they’re spaced the same distance apart as your horse’s natural stride. That way, your horse can concentrate on learning where to put his feet without having to figure out how to rebalance himself at the same time. As you take your horse over the cavaletti, you’ll be asking for relaxation and expression. Your goal should be to try not to interfere. You’re not training your own eye here, you’re training your horse’s eye.
If you don’t have access to true cavaletti (either notched poles or X’s) and you use ground poles, use caution as well, because you don’t want your horse to stumble over the very things you’re using to build confidence. Use ground poles in a place where you can mound some footing over both sides at either end, to stabilize them. Just because you’ve never seen a horse stumble is not a reason to skip this step, any more than feeding a 2″ x 2″ piece of carrot is a good idea just because you’ve never seen a horse choke.
If you want to train over cavaletti at the walk as well as the trot, you’ll need to set up two sets of cavaletti, or you’ll be messing with one gait. Or you’ll need a ground person to alter the distances for you, or dismount and do it yourself. Same goes for canter.
Be sure to set up at least three cavaletti in a row so your horse doesn’t decide you’re training him to jump over a ditch or an oxer. Once that’s flowing smoothly, you can add one or more but don’t go crazy. The point isn’t the length of ground you’ll cover, but how well your horse learns to use himself.
Always give yourself a nice distance in front of the cavaletti to establish your pace and keep your horse between your hands and legs to ensure that you go over the center of the poles. Allow your horse to figure out the exercise, and encourage him to relax. If he wants to look down at first, that’s okay. Ideally, he’ll telescope his neck, raise his back and start swinging. Be prepared for a bigger movement and concentrate on keeping your seat light (two-point at the canter) and your center of gravity stable.
Once you can go comfortably through cavaletti at your horse’s natural stride, you can vary the distances, to teach your horse to lengthen and shorten his stride. If you’ve got a hunter or a jumper, you’ll want to teach your horse a 12′ stride at the canter as soon as he’s figured out where to put his feet, and only when that’s established will you work at shortening (first) and lengthening (second). You’ll work with your horse’s natural stride at the trot, shortening and lengthening. After that, you can move on to grid work and gymnastics, and use cavaletti to substitute for jumps, as Bert deNemethy did for the 1972 Olympic team. Rumor has it that Bill Steinkraus, Frank Chapot, Kathy Kusner and Neal Shapiro all thought he was an idiot at the time, before they secured team Silver.
If you’ve got a dressage horse, you’ll want to use cavaletti at the walk and trot to increase the articulation of the hocks, the freedom of the shoulders and the amplitude of the stride, first by extending the distance between cavaletti and then by shortening it.
There are lots of different arrangements of cavaletti you can use to keep the work interesting for your horse. With the proper foundation (which includes the proper spacing), you’ll know you’re helping your horse be his best at every stage of the game.
Enjoy the ride!
I love my early morning coffee and my computer! I set in the overstuffed chair and read favorite blogs and search for new ones that appeal to my horsey interests. Sometimes these searches are due to a “challenge” I may be experiencing, or a comment someone made as we discuss a lesson or technique. Recently I’ve become interested in the process of giving full my full attention to the horse, becoming so in-tuned with the horse that I leave all other issues and stress at the gate, some call it developing a “feel”. So I was quite pleased when I happened upon Elizabeth Hanson’s newsletters for her Equestrian Pilates. In this article she shares four skills used to maximize the riding experience and become a team member with your horse. The insight provided is just what I needed. Perhaps you too will enjoy her writings and read more of her work at her site 
