An assembly provided for the practice of a gliding, rolling, or walking sport, such as snowboarding, skateboarding, or snowshoeing, for example, the assembly including a device for receiving a foot or a boot, as well as a board. The assembly includes a system for marking the position of the receiving device with respect to the board (3), the marking system including a first marking arrangement associated with the receiving device, as well as a second marking arrangement associated with the board, the first and second marking arrangements being provided to cooperate with one another.