Abstract: Ski adapted to receive a skier's boot, the ski having a front tip, a rear end, front and rear contact lines, and a central zone between the front tip and the rear end. The distance separating the forward contact line and the ski tip is greater than or about 500 mm. The shovel, located between the front tip and the forward contact line has a convex zone which includes a first shovel portion having a lateral profile extending between an arc of circle with a 9-meter radius and an arc of circle with a 5-meter radius; a second shovel portion contiguous with the first shovel portion and having a lateral profile extending between an arc of circle with a 9-meter radius and an arc of circle with a 1-meter radius; a third shovel portion contiguous to the second shovel portion and extending to the front tip of the ski.

Abstract: 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.

Abstract: 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.

Abstract: Ski adapted to receive the boot of the skier, the ski has a front tip, a rear end, and a central zone located between the front tip and the rear end and which, when positioned on a flat surface, includes at least two contact lines with the flat surface, such contact lines being a forward contact line, positioned in the vicinity of the front tip, and the rear contact line, positioned in the vicinity of the rear end; the distance separating the forward contact line and the ski tip is greater than 500 mm or about 500 mm. The portion located between the front tip and the forward contact line, i.e.