Disclosed herein is a lid guide structure (1) for a sun roof device. The lid guide structure (1) comprises a first elongate member, a second elongate member extending in a given direction from one end of the first elongate member, and a third elongate member extending in the given direction from the other end of the first elongate member. Each of the second and third elongate members includes a longitudinally extending gutter portion (5) which is defined between outboard and inboard walls (11,13). Mutually facing surfaces of the outboard and inboard walls (11,13) are each formed at a major part thereof with a longitudinally extending channel (17,18) leaving a longitudinally extending ridge at the upper end of each wall. Each of the facing surfaces has no portions which are projected inwardly beyond an imaginary plane (A,B) which includes the major part of the facing surface.