The Liard River flows through the Yukon Territory, British Columbia and the Northwest Territories, Canada. Rising in the Saint Cyr Range of the Pelly Mountains in southeastern Yukon, it flows 1,115 km (693 miles) southeast through British Columbia, marking the northern end of the Rocky Mountains and then curving northeast back into the Yukon and Northwest Territories, draining into the Mackenzie River at Fort Simpson, Northwest Territories.