Krui River rises on the southern slopes of the Great Dividing Range, below Oxleys Peak, at Mount Palmer and flows generally southwest, joined by six minor tributaries before reaching its confluence with the Goulburn River near Comiala Flat. The river descends 567 metres (1,860 ft) over its 71 kilometres (44 mi) course.[2]
Near the village of Collaroy, the Golden Highway crosses the Krui River.[2]