Triming a horse’s hoof is usually done by a regular farrier who comes out every six to eight weeks. He will trim or put shoes on your horse’s hooves and then leave for another six to eight weeks. But what do you do when your farrier is backed up, and your horse really needs to be trimmed? You can trim a horse’s hooves yourself if you follow a few steps.
Clean your horse's hooves with a hoof pick to remove all of the dirt and rocks.
Start trimming the rest of the hoof starting on one side and moving along the edge to the other side. Keep the hoof the same length as the toe.
Place the horse with all four hooves on a hard flat surface and compare them. They should all be of equal length.