As a river flowing to the south to Pyeongchang-gun and Yeongwol-gun of Gangwon-do into the Namhangang River, the Pyeongchang River is 220 km long.
Originating from the south of Odaesan Mountain in the northern part of Pyeongchang-gun, Gangwon-do, the water flows southwest to Soksacheon Stream, then merges with Heungjeongcheon Stream at Bongpyeong-myeon to form the Pyeongchanggang River.