A shock-absorbing sole for a ski boot. The sole of the ski boot includes at least one elastically deformable element and at least one stiffener, which together comprise the shock absorption apparatus of the invention. The stiffener gives the sole its necessary rigidity for cooperation with the ski bindings. The elastically deformable element, on the other hand, absorbs forces that are encountered during skiing. The shock absorption apparatus can be included in a removable end plate so that the elastically deformable elements can be conveniently replaced to thereby permit the skier to insert an element having the properties he desires. The elastically deformable elements can be either flush with the lower surface of the sole or, alternatively, can be sandwiched within the thickness of the sole. The elastically deformable element can be arranged only on the exterior side or, alternatively, only on the interior side of the sole of the ski boot to thereby cushion forces that are generally encountered to a greater degree during turns. The stiffeners can be arranged either coaxially with the longitudinal axis of the sole of the ski boot, or they can be parallel, yet offset from the longitudinal axis boot to thereby effect an asymmetrical arrangement. Alternatively, the stiffener can be located angularly to the longitudinal axis of the sole of the ski boot to thereby give the sole of the ski boot more rigidity with regard to forces encountered which are oblique to the longitudinal axis of the ski boot.