A rail system (1), for a vehicle seat, includes a lower rail (3), an upper rail (5), a sliding block (7) and at least one rolling body cage (9) having rolling bodies (11). The sliding block (7) is rigidly connected to the lower rail (3). The rolling body cage (9) is movable relative to the sliding block (7), parallel to a longitudinal axis (13) of the lower rail (3), between two end positions defined by end stops (71) of the sliding block (7). The rolling body cage (9) is coupled to the lower rail (3) via the rolling bodies (11). The upper rail (5) is mounted movably on the sliding block (7) along the longitudinal axis (13) of the lower rail (3) and is coupled to the rolling body cage (9).