In principle, the device comprises a supporting element for a ski that is placed beside the outer side of a ski boot, the supporting element having a movable part formed by a rotatable body and a fixed part on which the movable part is coupled rotatingly, while the rotatable body includes a receptacle for receiving the rear end section of the ski. It is characterized in that the receptacle of the rotatable body is delimited by an elastic frontal retaining and support rim (7) for the ski and adjustable runners (8) that can be adapted to the width of the ski (6).