One embodiment is directed to a system for mounting a rider to a snowboard, and an interface for use in such a system. The system comprises a snowboard boot, a snowboard binding and an interface having at least one mating feature adapted to be releasably engaged by the snowboard binding. The interface further includes at least one strap adapted to mount the interface to the snowboard boot. The outer sole of the snowboard boot includes a recess rearward of the arch area that is adapted to receive the interface so that the interface does not protrude below the outer sole when the interface is mounted to the snowboard boot. In another embodiment, the interface includes a base that is adapted to pass under the sole of the snowboard boot, the base having a non-planar contoured upper surface that is adapted to fit within a recess in a sole of the snowboard boot. In another embodiment, the mating feature of the interface includes at least one engagement pin that extends outwardly from medial and lateral sides of the interface and is circular in cross-section. The various features of the system can be combined or used separately.