The invention describes a ski binding with guide elements for a front and a rear binding piece body oriented in the binding longitudinal direction, which binding piece bodies are designed to retain the front and rear end portion of a sports shoe. This ski binding comprises a first coupling element connected to the front binding piece body and a second coupling element connected to the rear binding piece body. A positioning and fixing mechanism is disposed between the binding piece bodies in order to adjust and retain the binding piece bodies by reference to the binding longitudinal direction. The first and second coupling element can be selectively rigidly coupled with one another and uncoupled from one another.