A linear guide system has at least a first rail element and a second rail element, which are mounted to be linearly slidable opposite one another in and counter to an extraction direction, a linear drive, which includes a rotatable drive shaft and an electric motor configured for the transmission of a torque to the drive shaft. The linear drive is configured such that a rotational movement of the drive shaft causes a linear movement of the first and second rail elements relative to one another in or counter to the extraction direction. A locking element is provided, which can be set and reset between an unlocked position and a locked position, which, for blocking the rotational movement of the drive shaft in the locked position, is configured so as to engage in a form-locking or force-locking manner with an engaging element connected to the drive shaft in a rotationally fixed manner or configured as a portion of the drive shaft. An actuator is provided, which is configured for setting the locking element towards the engaging element from the unlocked position into the locked position, as well as for resetting the locking element from the locked position into the unlocked position.