Abstract: A guide system includes a guide rail for guiding a door wing, a running carriage to be connected to the door wing and displaceably supported along the guide rail, and a carrier on which the running carriage can be arranged. The carrier is movably supported in a direction transverse to the longitudinal direction of the guide rail. The carrier can be moved into a transfer position in which the carrier adjoins the guide rail in the longitudinal direction. A locking device can releasably lock the carrier in the transfer position to restrain a movement in the transverse direction. The locking device includes a movably-supported locking element for releasably locking between the guide rail and the carrier, and a control contour curved so that the running carriage can be moved over a region in the transverse direction. The movably-supported locking element includes a supporting element displaceable along the control contour.