Trail is a competitive class at horse shows where horses and riders in western-style attire and horse tack navigate a series of obstacles. Contestants ride the course one at a time. Originally designed to resemble situations a horse and rider might actually encounter when on a trail in a natural habitat, modern trail classes now tend to focus more heavily on agility and manners, with courses bearing very little resemblance to real-world natural trails.
Israel...".....you shall bind them for a sign upon you hands, let them be frontlets between your eyes. And you shall write them on the doorposts of your house, upon your gates." (Deuteronomy) D'varim 6:4-9