Mountain biking? So, you Croatia holiday can be complitly and something else. Whenever or wherever you arrive at a mountain or a hill in Croatia , you are assured of excellent terrains for mountain hiking - be it on the mainland or on the islands. For those seeking more taxing ascents and the adrenalin-pumping excitement of downhill riding, there is Ucka, the mountains of Gorski kotar, Zumberak; the route through Vinodol to Velika Kapela, from Lika to Velebit; in the rugged terrains between the rivers of Dalmatia; on the mainland side of Biokovo.