Mojstrana is located in the Upper Sava Valley at the point where Bistrica Creek joins the Sava River below the main road from Jesenice to Kranjska Gora at an elevation of 641 m. The glacial Vrata Valley leads from Mojstrana towards the southwest past Peričnik Falls to the north face of Mount Triglav. The road to three other valleys—Radovna, Krma, and Kot—also begins in Mojstrana.