A telescopic rail (1, 1') for a microwave oven comprising at least one first rail element comprising an electrically conductive material, and a second rail element comprising an electrically conductive material, wherein the first and second rail elements (2, 4) each have two running surfaces, wherein at least the first rail element has a rear portion connecting the two running surfaces, wherein arranged on the two running surfaces of the first rail element are rolling bodies which are accommodated in a rolling body cage and arranged on the two running surfaces of the second rail element are rolling bodies accommodated in a rolling body cage, and wherein the first and the second rail elements (4, 2) are displaceable relative to each other between a retracted position and an extended position along an extension direction, wherein the first rail element has a shielding element which is moved with the first rail element and comprises a material which is non-transparent for a microwave radiation of the microwave oven, characterised in that the shielding element has a connecting portion which extends substantially parallel to the rear portion of the first rail element and a first limb portion and a second limb portion so that the shielding element extends around the first and the second rail elements (2, 4) with a substantially U-shaped cross-section, wherein the connecting portion, the first limb portion and the second limb portion are of a length in the extension direction so that in the retracted position the shielding element covers the first and the second rail elements (2, 4) over the entire length thereof in the extension direction, wherein the shielding element has a curved first transitional portion connecting the connecting portion and the first limb portion, and wherein the first transitional portion has a radius of curvature of 4 mm or more. at least one first rail element comprising an electrically conductive material, and a second rail element comprising an electrically conductive material, wherein the first and second rail elements (2, 4) each have two running surfaces, wherein at least the first rail element has a rear portion connecting the two running surfaces, wherein arranged on the two running surfaces of the first rail element are rolling bodies which are accommodated in a rolling body cage and arranged on the two running surfaces of the second rail element are rolling bodies accommodated in a rolling body cage, and wherein the first and the second rail elements (4, 2) are displaceable relative to each other between a retracted position and an extended position along an extension direction, wherein the first rail element has a shielding element which is moved with the first rail element and comprises a material which is non-transparent for a microwave radiation of the microwave oven, characterised in that the shielding element has a connecting portion which extends substantially parallel to the rear portion of the first rail element and a first limb portion and a second limb portion so that the shielding element extends around the first and the second rail elements (2, 4) with a substantially U-shaped cross-section, wherein the connecting portion, the first limb portion and the second limb portion are of a length in the extension direction so that in the retracted position the shielding element covers the first and the second rail elements (2, 4) over the entire length thereof in the extension direction, wherein the shielding element has a curved first transitional portion connecting the connecting portion and the first limb portion, and wherein the first transitional portion has a radius of curvature of 4 mm or more.