Gliding board that includes an upper sub-assembly, a lower sub-assembly, and an intermediate core, the upper sub-assembly including a first longitudinal opening, the lower sub-assembly including a second longitudinal opening, and the intermediate core including a third longitudinal opening, each of the first, second, and third longitudinal openings being positioned at the rear end of the gliding board, the gliding board further including a rigidifying element that is inserted simultaneously in the first, second, and third longitudinal openings. The rigidifying element can have a planar, bulging, or convex lower surface.