The objective of the present invention is to provide a routing structure that is for an operation cable and that, with a simple structure, can route an operation cable (7) with sufficient excess length. The present invention has: a handle device (5) that is affixed to the door (1) of a vehicle and that causes the operation force to an operation handle (3) rotatably connected to a handle base (2) to be output from an output section (4); a door lock device (6) that is disposed in proximity to the output section (4) of the handle device (5); and an operation cable (7) that couples the output section (4) of the handle device (5) and the door lock device (6). The operation cable (7) is connected from the output section (4) to the door lock device (6) via an excess length securing pathway that is approximately one circuit of the perimeter of the handle device (5), and the operation cable (7) is movably supported by a guide section (9) provided to an intermediate position of a mobile member (8) of the handle device (5), and the connection section to the door lock device (6) of the operation cable (7), and on the handle base (2), and thus the ingress of the mobile member (8) into a mobile region is restricted.