A horseshoe (1, 12) made of a rubber, plastic or other elastomer material, with a metal insert (18) placed inside the rubber, plastic or other elastomer material. The insert (18) has the same general form as the horseshoe (1, 12). The insert (18) is made of a forged metal, such as forged steel of forged aluminum. A number of grooves (4, 5) and slots (6) are arranged on the side to be facing the ground in use.