Abstract: A snow ski binding is provided that includes a boot plate which is releasably securable to a ski by a toe piece and heel piece. The boot plate is pivotally connected to the toe piece so as to selectively pivot about a transverse axis and allow a skier to move in a cross-country motion. The heel piece is movable between a plurality of positions to selectively lock the trailing end of the boot plate to the ski to facilitate downhill skiing or can be repositioned to allow the boot plate to pivot about the toe piece while restricting the downward movement of the trailing end of the boot plate between two locations to facilitate use of the binding in a cross-country mode for climbing hills.