A glass run includes a bottom wall, a vehicle outer side wall, and a vehicle inner side wall as a basic skeleton. The basic skeleton is attached to a door frame groove portion formed in a door frame, the glass run guiding upward and downward movement of a door glass. In the glass run, a vehicle inner side of the vehicle outer side wall is formed with a thick portion that protrudes toward a vehicle inner side, comes into sliding contact with the door glass, and has higher hardness than hardness of a vehicle outer side wall body portion of the vehicle outer side wall.