Elwha is the name of a river in the Olympic National Park running to the north that empties into the Strait of Juan de Fuca 6 miles west of Port Angeles. It is approximately 30 miles in length after the forks beginning NE of Mount Meany and W of Mount Anderson. It also has 2 lakes one of which being a hydroelectric dam, Lake Mills.

There are many trails along this route, some leading to popular spots like Hurricane Ridge and Hume's Ranch.