Splitboard binding systems and assemblies for use in ski mode or snowboard mode. Left and right bottom rails are attached to the bottom surface of a base plate. Each rails may have a circular hook at a forward end for attachment to a toe bracket in a ski mode. The rails and base plate define channels for slidable attachment to “pucks” disposed on the gliding board in snowboard mode. A securing lever disposed near the rear end of the binding with a securing member disposed on the lower surface thereof may be rotated into a downwards position so the securing member resides below the base plate to secure the binding in position when installed on “pucks” in a snowboard mode. Crampon assemblies and sliding heel locks for use with the binding assembly are aso disclosed.