Abstract: Raceway for electrical cables having a channel-shaped base element made up of a flat bottom wall, and two side walls which form with the flat bottom wall respective blunt edges and which have a plurality of narrow cut-outs that are parallel and extend perpendicular to the flat bottom wall and a series of slits arranged between the flat bottom wall and the narrow cut-outs. Each slit extends as far as the flat bottom wall, completely sectioning the blunt edge that the slit forms with the side wall The flat bottom wall is provided with a weakening line extending parallel to the blunt edge. The raceway allows a cable to be deviated through one of the side walls without having to deviate the cable vertically, by breaking away one of vertical flanges (20) defined between two the narrow cut-outs.