Tertius is a 7 year old horse and has raced from 2018 to 2021. He was sired by Siyouni out of the Shamardal mare Rhenania. He was trained by Markus Nigge and has raced for Mme Christa Zass, and was bred in [Add Data] by Mme Christa Zass. Tertius has raced at , Clairefontaine-FR, Deauville-FR, Fontainebleau-FR, ParisLongchamp-FR, Maisons-Laffitte-FR, Saint-Cloud-FR with wins at , Fontainebleau-FR. His stakes wins include wins in the 2021 Prix Cor de Chasse (LS), and the 2019 Prix Ronde de Nuit (LS).