Highway 37 is a major highway connecting the Yellowhead Highway with the Alaska Highway to the north in the Yukon Territory. It is 874km long, and goes from Kitimat, British Columbia to Upper Liard, Yukon. It is the northwesternmost highway in the province of British Columbia.
Highway 37 begins in Kitimat, and goes north as the Dease Lake Highway, passing through Lakelse Lake on the way to Terrace. In Terrace, it merges onto Highway 16, and begins heading northeast as the Yellowhead Highway. The two highways travel northeast to Kitwanga junction, where Highway 16 diverges east.
From here, Highway 37 goes north again. When it reaches Kitwancool Lake, it starts going northwest. It will eventually reach Cranberry Junction, a junction with Highway 113. Highway 37 then continues north to Meziadin Junction, a junction with Highway 37A. Highway 37 proceeds north some more to the town of Dease Lake. Highway 37 then goes north for the final stretch to the British Columbia-Yukon border, which it crosses, and then ends at a junction with Yukon Highway 1 (Alaska Highway) near Upper Liard, Yukon.