Abstract: A runner and guide rail for curtains intended to maintain a line for opening and closing the curtains automatically and constantly to the tension state by intermediately installing elastic members at the connections between the runner and the line. A guide rail for curtains that can be compactly stored and transported by dividing the guide rail body and linking segments with bendable couplers. In addition, a guide rail for manually opened and closed type curtains which can simultaneously open and close right and left curtains by pulling the curtain on one side.