Velebit is the largest though not the highest mountain range in Croatia. Its highest peak is the Vaganski vrh at 1757 m. The range forms a part of the Dinaric Alps and is located along the Adriatic coast, separating it from Lika in the interior. Velebit begins in the northwest near Senj with the Vratnik mountain pass and ends 145 km to the southeast near the source of the Zrmanja river northwest of Knin.
Major mountain passes on Velebit include the aforementioned Vratnik or Senjsko bilo at 694 m.a.s.l., where the Josephina connects Senj with Josipdol; Oštarijska vrata at 928 m.a.s.l. that connects Karlobag and Gospić; and Prezid at 766 m.a.s.l. that connects Obrovac and Gračac.