In a ski, jumping ski or snowboard comprising a running surface lining, a top layer and several layers disposed between the running surface lining and the top layer, the running surface lining and the top layer having an external face facing away from the core, at least one of the external faces has an at least partially structured surface with a plurality of recesses. The recesses have a depth smaller than the thickness of the running surface lining and the top layer, and an annular rounded transition region surrounds the recesses, the rounded transition region having an arcuate contour which is convex relative to the external face.