Glass run channel and glass run channel assembly

A glass run channel invention having a shock absorption member (15) provided in a direction crossing a movement direction of a windowpane (20) with a gap provided between a base bottom portion (11) and the shock absorption member. A low-friction material layer (155) is integrally provided at a contact face (151) of the shock absorption member which is configured to come into contact with an edge of the windowpane and a back face (152) of the contact face and/or a bottom face (111) of the base bottom portion opposite the back face.