"How long is the River Kuskokwim"@en . "The River Kuskokwim is 652 miles (1,050 km) long. It flows into the Bering Sea. The countries within its drainage basin are: United States"@en . . . "The River Kuskokwim is 652 miles (1,050 km) long. It flows into the Bering Sea. The countries within its drainage basin are: United States"@en .