They're actually building a road north out of Inuvik to Tuktoyaktuk, which will take you to the Arctic Ocean:
http://www.cbc.ca/news/multimedia/driving-to-the-top-of-the-...
http://www.cbc.ca/news/multimedia/driving-to-the-top-of-the-...
That's 3750 km (2400 miles) by road from Vancouver BC to the Arctic Ocean. Longer than Melbourne to Perth across Australia.