Kammala jumla mai zuwa: Marić ya fara wasan sa na kasa da kasa a shekarar 2012 ga kungiyar kwallon kafa ta kasa da kasa ta kasar Croatia a gasar FIBA ta Turai a karkashin shekaru 18, inda ya lashe lambar zinare. A cikin 2013, ya buga wa ƙungiyar 'yan ƙasa ta 19 ta Croatia a gasar zakarun Turai.
Gasar cin kofin duniya ta FIBA ta 'yan kasa da shekaru 19. A cikin 2014, ya buga wa tawagar 'yan wasan Croatia 'yan kasa da shekaru 20 a Gasar FIBA ta Turai 'yan kasa da shekaru 20.