What is the difference between the jog and the extended jog in working western rail and how do you train each?

The jog in working western rail is the horse's working trot — a ground-covering, two-beat diagonal gait that is slower and more relaxed than an extended trot but forward and active enough to demonstrate the horse's willing movement and correct rhythm. It should not be confused with the slow, shuffling jog of western pleasure competition; the working western rail jog has genuine forward momentum and a slightly longer stride. The extended jog — called for in some working western rail classes and ranch riding patterns — asks the horse to lengthen its stride while maintaining the same rhythm and tempo as the working jog. The horse covers more ground per stride rather than moving faster. The topline should swing and the overstride should increase, but the rhythm stays consistent. A horse that speeds up into a faster jog rather than genuinely lengthening its stride has not produced a correct extended jog. Training the working jog focuses on developing a consistent, self-maintained pace that the horse carries without constant driving. The horse should maintain its jog regardless of what other horses in the class are doing, without speeding up when passed or slowing when another horse falls behind. Clinton Anderson develops this consistency through longing work and under-saddle transitions that require the horse to maintain its gait precisely until asked to change. Training the extended jog requires first confirming the working jog, then developing the horse's ability to lengthen through the back and reach further with the hind leg in response to a specific cue — typically increased leg pressure with a following seat — and return to the working jog cleanly when the cue changes. The return to working jog must be as smooth as the extension; a horse that falls onto its forehand or breaks to a walk when asked to come back has not confirmed the transition.