A glass run 5 fit on a door sash 2 of an automobile has: a cross-section roughly U-shape comprising an outer-cabin side wall 6, an inner-cabin side wall 7 and a connecting wall 18 which connects the outer-cabin side wall 6 and the inner-cabin side wall 7 for guiding a door glass 3 lifting or lowering into a ditch part 4; and an outer lip 9 and an inner lip 10 respectively formed on inner surfaces of both of the side walls 6, 7, which extend toward a connecting wall 18 side and are slidably brought into contact with the door glass 3, wherein: the connecting wall 18 has a part thereof swelled and curved toward an inner surface side thereof, which faces a position on the connecting wall 18 where the door glass 3 collides; the connecting wall 18 swelled and curved has two projections 21, 22 formed on an outer surface thereof, which come into contact with the door sash 2 and of which an interval 50 therebetween is not more than thickness 60 of the door glass 3; and a position surrounded by the two projections 21, 22, the connecting wall 18 and the door sash 2 is formed into a space 40 having a cross-section roughly semicylindrical shape.