Horseshoe comprising on a portion of its surface an extra thickness or rib (2) intended to bear on the ground and forming two branches (4) which are spaced apart sideways from each other rearwards. The remaining portion (1) of reduced thickness of the horseshoe extends beyond the branches of the rib, on the one hand, sideways and outwardly (6) and, on the other hand, sideways and inwardly (7), leaving a medial free space (42) between the two branches of the rib, and/or rearwards (8) so as to come in contact, after horseshoeing, both with the wall (52) and with the bars (53), the branches of the rib facing completely the sole (54).