The invention relates to a guiding device for a line, in particular a power chain (12), which can be turned over in such a way that a section (upper run) (16) of the power chain can be positioned above another section (lower run) (14) of the power chain and the upper run and the lower run are connected to each other by an arched section (18), wherein the guiding device has resting surfaces and lateral guiding surfaces and is provided with retaining elements (22) arranged at distances one another in the direction of travel, to which retaining elements guide rails (24) are attached preferably by means of clip connections, which guide rails bridge the distances between the retaining elements and support the lower run and/or the upper run of the line or power chain.