A snowboard binding (1) including a base plate (2), arranged to receive the sole of the user's boot, and an element (5) for securing to the board located in the central part of the base plate, wherein the base plate (2) includes two plates (10, 11) for receiving the contact of the boot sole, these two plates (10, 11) partially overlapping and each having an adjustable longitudinal position, and wherein locking means (25) pass through the two plates (10, 11) in their overlap zones (14, 16) in order to anchor them in an element (5) for securing the base plate to the board.