Gliding sport boot sole

Ski boot sole comprising:

• a ski boot sole plate made of a composite material comprising reinforcing ribs of the plate, the reinforcing ribs of the plate forming reinforcing ribs of the ski boot sole, wherein the reinforcing ribs of the ski boot sole consist essentially of the reinforcing ribs of the plate and are integrally formed in the composite material of the plate;
• and rear and front ski boot sole components extending under the plate and forming gripping tread patterns, the front component comprising at least one binding device intended to cooperate with a corresponding binding device belonging to a ski, wherein the rear and front components are assembled to the plate at a distance from each other, so that the composite material of the plate forms a central part of an underside of the sole, wherein the central part of the underside of the sole extends between the rear and front components, wherein the underside of the sole consists essentially of the composite material of the plate between the front and the rear components, wherein the reinforcing ribs include two front ribs extending on lateral parts of the plate on an anterior part of the sole and a rear rib extending in a central zone of the sole forming a Y shape, the two front ribs each extending over a length in a range of from 30% to 80% of a length of a front half of the sole, wherein the length of the front half of the sole is a distance between a middle of the sole and a front end thereof, wherein the ribs have a height of less than or equal to 5 mm and a width of between 5 mm and 20 mm, and wherein the reinforcing ribs are formed by folds of the plate, the reinforcing ribs having a height greater than a thickness of the plate with projecting surfaces of the reinforcing ribs projectinq convexly outward from a first face of the plate and with concave relief surfaces extending concavely inward from a second face of the plate.