A glass run capable of preventing noises from intruding into an automobile compartment from an interior of an automobile door via glass runs during running of an automobile. The glass run includes extruded parts and molded parts. Each of the extruded parts and the molded parts has a bottom wall, an outer side wall, and an inner side wall, which define a generally U-shaped cross-section. An outer seal lip and an inner seal lip respectively extend from open ends of the outer side wall and the inner side wall towards the interior of the glass run. A barrier rib is formed in at least one position of the molded parts between the inner side wall and the inner seal lip or between the outer side wall and the outer seal lip.