The present invention relates to a gliding board for cross-country skiing, intended to receive a shoe fastener (F) including an upper face, a lower face and side ridges, characterized in that at least one of the side ridges of the board is provided with a series of notches (11) whereof each rim (11a) defines, on the one hand, a transverse stop face (12) making it possible to stop the board in the backwards direction, and on the other hand, a longitudinal connecting face (13) between the notches (11) allowing forward gliding.

An accessory traction device removably attached to undersides of backcountry skis is described herein. The device will provide users' ability to ascend terrain without removing skis and walking uphill. As designed, the device has novel structure with flanged or clamping ends with a threaded fastening rod that improves longevity while minimizing any possible damage to the ski itself. The traction wave patterns and grooves are also optimally designed and tapered. An additional inventive aspect involves a few hinge options wherein the hinge allows the device to be conveniently folding and stowed in a backcountry skier's backpack.