What is the longest river in Canada?

The longest river in Canada is the Mackenzie River. Flowing for approximately 1,738 miles (2,800 kilometers), the Mackenzie River runs through the northern territories of Canada, draining into the Arctic Ocean. It is a major waterway that connects the vast wilderness of northern Canada with the rest of the country. The river passes through several major lakes, including the Great Slave Lake, and is important for both transportation and trade in the region. The Mackenzie River Basin is also ecologically significant, supporting a diverse range of wildlife.