Abstract: A snowshoe (1) for mountain winter sports includes: a plate (2) for resting on the snow and distributing a user's weight, having an upper face (2?) and a lower face (2?); elements for fixing, at least partially, the user's foot to the upper face (2?) of the plate (2); and a plurality of spikes (3), where the plate (2) includes a mobile structure (4) adapted to make the plurality of spikes (3) alternately available below the lower face (2?) of the plate (2), so as to define an uphill and a downhill configuration.