The invention relates to a ski having a sliding surface and a ski upper face opposite the sliding surface, wherein a climbing aid can be attached to the sliding surface and the ski has a continuous through-hole in an area located before a contact surface, which through-hole extends from the sliding surface to the ski upper face. According to the invention, a securing element is arranged on the ski upper face which securing element comprises at least one holding element for the form-fitting connection to a corresponding counter element of the climbing aid.