The present invention relates to a tensioning rail for a chain drive, in particular a timing chain drive of an internal combustion engine, comprising a base body (11) and a pressure body (1) connected to the base body which provides a pressing area (2) for pressing a chain tensioner, wherein a pressing surface (4) of the pressure body (1) which faces the chain tensioner during use is formed with a channel device (5). The invention also relates to a tensioning device for an endless drive element, in particular a timing chain of an internal combustion engine, comprising a tensioning rail which can be pushed on the endless drive element having a base body (11) and a pressure body (1) which can be connected to the base body (11) and which provides a pressing area, and having a chain tensioner which presses on the pressing area (2) of the pressure body (1).