A fitting for a cable trough system, the fitting including a bottom wall and side walls extending from at least a first terminal end to a second terminal end and forming a trough therebetween, the side walls being curved in a longitudinal direction, and an end portion formed at each of the first and second terminal ends, the end portion including first and second guiding surfaces defining a space therebetween, and a spring member positioned in the space. The space is sized to receive a terminal end of a trough member of the cable trough system, and wherein the spring member is positioned to engage the terminal end of the trough member to couple the trough member to the fitting. Other cable routing devices can also be used.