A collapsible barrel is provided for use in training for equine barrel racing. The collapsible barrel is configured and sized to approximate the dimensions of a conventional barrel used in the sport of equine barrel racing, but is constructed of sturdy, lightweight materials that enable the barrel to be transformed between a fully deployed state and a collapsed state. The collapsible barrel of the present invention is sufficiently lightweight and dimensioned, when in a collapsed state, to be easily transported, deployed for training and later stored. The flexibility of the collapsible barrel makes training ideal because it eliminates injury to the legs of the rider and the body of the horse.