A guide system for guiding a movably-supported first furniture part , in particular a first door wing of a folding door, hingedly connected to at least one second furniture part , in particular a second door wing of a folding door, comprising: - a first guide rail for guiding the furniture parts , - a second guide rail for guiding the furniture parts , the second guide rail extending transversely relative to the first guide rail in a mounted position, - a guiding device to be connected to one of the furniture parts , the guiding device being movable relative to the first and second guide rail and configured to be transferred in a crossing region , seen in a top view onto the first and second guide rails in the mounted position, between the first and second guide rail , the crossing region being a region where the guide rails or notional extensions of the guide rails intersect with one another when viewed from above, - wherein the guide system includes a drive device having an entrainment member which is acted upon by at least one force storage member , the entrainment member being configured to be releasably coupled to the guiding device , wherein the entrainment member is locked in a parking position and wherein the entrainment member can be unlocked by an entry of the guiding device into the crossing region such that the entrainment member , jointly with the guiding device coupled therewith, can be retracted from the crossing region at least over a region along the second guide rail by a force of the at least one force storage member , - wherein the guide system includes a column vertically extending in the mounted position, and the entrainment member is pivotally supported about a pivoting axis on the column , characterized in that the column , jointly with the guiding device , is movably supported via supporting rollers along second guide rails to be fixed to a sidewall of an item of furniture , wherein the first guide rail and the second guide rails are spaced from one another in a height direction in the mounted position. - a first guide rail for guiding the furniture parts , - a second guide rail for guiding the furniture parts , the second guide rail extending transversely relative to the first guide rail in a mounted position, - a guiding device to be connected to one of the furniture parts , the guiding device being movable relative to the first and second guide rail and configured to be transferred in a crossing region , seen in a top view onto the first and second guide rails in the mounted position, between the first and second guide rail , the crossing region being a region where the guide rails or notional extensions of the guide rails intersect with one another when viewed from above, - wherein the guide system includes a drive device having an entrainment member which is acted upon by at least one force storage member , the entrainment member being configured to be releasably coupled to the guiding device , wherein the entrainment member is locked in a parking position and wherein the entrainment member can be unlocked by an entry of the guiding device into the crossing region such that the entrainment member , jointly with the guiding device coupled therewith, can be retracted from the crossing region at least over a region along the second guide rail by a force of the at least one force storage member , - wherein the guide system includes a column vertically extending in the mounted position, and the entrainment member is pivotally supported about a pivoting axis on the column , characterized in that the column , jointly with the guiding device , is movably supported via supporting rollers along second guide rails to be fixed to a sidewall of an item of furniture , wherein the first guide rail and the second guide rails are spaced from one another in a height direction in the mounted position. <EOS>