A guiding device for a door system, in particular a sliding or pivot sliding door system of a public transport vehicle, includes: a longitudinal profile formed from a first material for attachment to a door portal, which has a guiding track, which is U-shaped in cross section, with a bottom surface and two side walls extending at right angles therefrom, a slider, which at least partially reaches into the guiding track and is supported on rolling members in a linearly movable manner in the guiding track, wherein a bearing member formed from a second material is disposed in the guiding track, which extends along the guiding track and on which the rolling members supporting the slider roll during a linear movement of the slider, the second material forming the bearing member is harder than the first material forming the longitudinal profile.