Telescopic conveyor belt, with a base conveyor section, a telescopic conveyor section on the base conveyor section and which can be extended and retracted telescopically, in and counter to a direction of extension, an endlessly circulating conveyor belt forming a conveyor surface and which, with its carrying run, is led along an upper surface of the base conveyor section and of the telescopic conveyor section, a base guide trough closed on the underside and arranged between the conveyor belt and the base conveyor section, has a carrying area for accommodating the conveyor belt and has raised guide areas following on laterally from the carrying area, and a telescopic guide trough closed on the underside and arranged between the conveyor belt and the telescopic conveyor section and has a carrying area for accommodating the conveyor belt and has raised guide areas following on laterally from the carrying area.