Difficulty ☆☆☆☆☆ 4/5 Distance: 650 KMLength: Three WeeksFeatures: Rapids, Waterfalls, Fast moving, Remote Wilderness The RouteThe river has several deadly rapids and waterfalls with some of the river being over 3km wide. The River splits into two channels, North and South Respectively, and the paddler can choose which to take. Paddle Carefully as their is not much to relax on. DirectionsThe Severn River is the largest River in the Far north of Ontario. Headwaters can be found in a a string of lakes Southwest of Sandy Lake. This is the most common Access point.