The invention relates to a longitudinal guide for an automotive vehicle seat with a surrounding rail (20), a surrounded rail (50), a free longitudinal channel (72) being formed between said rails and a first lateral encompassing area (68) and a second lateral encompassing area (70) located diagonally opposite said first lateral encompassing area being provided, with said surrounding rail (20) forming an outer grip around said surrounded rail (50) and the roll bodies (73-75) being disposed in a respective one of said areas, with guide channels for the roll bodies (73-75) being formed between the rails in the encompassing areas (68, 70). One guide channel (76) only is formed in the first encompassing area (68) while two guide channels (77, 78) are formed in the second encompassing area (70).