The invention relates to an energy guide chain system comprising an energy guide chain for guiding cables, hoses or the like between a stationary and a movable connection point, an entrainment portion to which the energy guide chain is connected by way of the movable connection point, and a guide channel which has a hollow profile with a passage extending in the longitudinal direction for the entrainment portion, wherein the energy guide chain is guided in the guide passage in the longitudinal direction thereof in the form of two runs which are guided in mutually parallel relationship and which are connected to each other by way of a deflection region, as well as a sliding door system for a vehicle having the energy guide chain system. In order to achieve easy and reliable guidance of cables, hoses or the like in at least two directions, it is proposed that the entrainment portion has a movable arm which projects from the guide channel with a fastening side for connection to an apparatus movable relative to the guide channel, wherein the spacing between the fastening side and the guide channel is variable in a travel component in transverse relationship with the longitudinal direction of the guide channel.