The Sava Dolinka rises in the Zelenci Pools, west of Podkoren in the Upper Carniola region of Slovenia at above sea level (a.s.l.), and flows east, past Kranjska Gora to Jesenice, where it turns southeast.
East of Zagreb, the river turns southeast again further through the Central Croatia, to the Sisak-Moslavina County, the city of Sisak, reaching a.s.l.