A riding floor assembly has a support layer laid on a subfloor. The support layer, or ground preparation layer, is formed of ground preparation elements that are substantially formed of plates and are arranged next to one another. A footing layer covers the upper side of the ground preparation layer. A plurality of tufts of bristles are provided on that side of the ground preparation layer facing toward the footing layer. The tufts of bristles have a length selected such that the bristles do not project out of the footing layer.