[1] The river freezes in October and stays frozen until late May or early June.

After a sharp bend it flows northwards along the eastern flank of the Omsukchan Range.

North of Omsukchan town the intermontane basin where the river flows is up to 1.2 kilometres (0.75 mi) wide and includes extensive wetland areas, as well as dense forests.

[3] Finally it joins the right bank of the Kolyma 1,300 km (810 mi) from its mouth.

[4][2] The main tributary of the Sugoy is the Khetagchan (Хетагчан) that joins it in its lower course from the right.