Non-protruding seat track apparatus and methods are disclosed. In one embodiment, a track includes an elongated support having a support surface and an engagement surface. The support surface is adapted to engage a lower surface of a floor panel, and the engagement surface is adapted to be coupled to a payload assembly. The engagement surface is at least one of flush with and recessed below the lower surface of the floor panel when the support surface is engaged with the lower surface. The engagement surface may have at least one of an engagement slot and an attachment aperture disposed therein.