The Stewart-Cassiar Highway, or simply Highway 37, is one of the most scenic routes of the North. It runs 718 kilometres (446 miles) from Alaska Highway near Watson Lake, through British Columbia to Kitwanga Junction on the Yellowhead Highway. The highway is much less travelled than the Alaska Highway, but it is rougher and narrow with gravel sections and steeper climbs, and is has far fewer facilities.

If you attempt to cover this highway on a bicycle then please note that as of 2011 there are still several unpaved sections of the road and it covers some very remote areas, with services far in-between at times. Bears are also frequently sighted along the road.