A telescopic rail comprising a first rail element, at least one further rail element and at least one rolling body cage (1, 20) for positioning a plurality of rolling bodies (7, 7') between two rail elements (8, 9), wherein the rolling body cage (1, 20) has at least two receiving limbs (2, 3, 21) having a respective plurality of through openings (6, 22), wherein the receiving limbs (2, 3, 21) together have a cross-section partially enclosing an internal space, a plurality of rolling bodies (7, 7') received in the through openings (6, 22) in the receiving limbs (2, 3, 21), wherein the rolling body cage (1, 20) is arranged with the rolling bodies (7, 7') between the first rail element and the further rail element, wherein the telescopic rail has a first group of rolling bodies and the rolling bodies of the first group are made of graphite, the telescopic rail has a second group of rolling bodies and the rolling bodies of the second group are made of a material which is of greater hardness than the graphite of the rolling bodies of the first group, and at least two rolling bodies of the second group are respectively received in the through openings (6, 22) of at least two receiving limbs (2, 3, 21), wherein the rolling bodies of the first group and the rolling bodies of the second group in at least one section plane are of a circular cross-section of a diameter, wherein in the through openings (6, 22) of each of at least two receiving limbs (2, 3, 21) all rolling bodies of the first group are of a smaller diameter than at least two rolling bodies of the second group, considered in the longitudinal direction in each receiving limb (2, 3, 21) the first and the last rolling bodies are respectively rolling bodies of the second group, characterised in that each rolling body of the first group is respectively separated from the rolling bodies of the second group by a portion of a receiving limb (2, 3, 21) of the rolling body cage. a first rail element, at least one further rail element and at least one rolling body cage (1, 20) for positioning a plurality of rolling bodies (7, 7') between two rail elements (8, 9), wherein the rolling body cage (1, 20) has at least two receiving limbs (2, 3, 21) having a respective plurality of through openings (6, 22), wherein the receiving limbs (2, 3, 21) together have a cross-section partially enclosing an internal space, at least two receiving limbs (2, 3, 21) having a respective plurality of through openings (6, 22), wherein the receiving limbs (2, 3, 21) together have a cross-section partially enclosing an internal space, a plurality of rolling bodies (7, 7') received in the through openings (6, 22) in the receiving limbs (2, 3, 21), wherein the rolling body cage (1, 20) is arranged with the rolling bodies (7, 7') between the first rail element and the further rail element, wherein the telescopic rail has a first group of rolling bodies and the rolling bodies of the first group are made of graphite, the telescopic rail has a second group of rolling bodies and the rolling bodies of the second group are made of a material which is of greater hardness than the graphite of the rolling bodies of the first group, and at least two rolling bodies of the second group are respectively received in the through openings (6, 22) of at least two receiving limbs (2, 3, 21), wherein the rolling bodies of the first group and the rolling bodies of the second group in at least one section plane are of a circular cross-section of a diameter, wherein in the through openings (6, 22) of each of at least two receiving limbs (2, 3, 21) all rolling bodies of the first group are of a smaller diameter than at least two rolling bodies of the second group, considered in the longitudinal direction in each receiving limb (2, 3, 21) the first and the last rolling bodies are respectively rolling bodies of the second group, characterised in that each rolling body of the first group is respectively separated from the rolling bodies of the second group by a portion of a receiving limb (2, 3, 21) of the rolling body cage.