Marathon canoeists at the "Classique internationale de canots de la Mauricie"
A canoe marathon is a paddling competition in which athletes start in one place and finish in another. Many events are raced down sections of river, including currents or portages around obstacles. Some events attract thousands of competitors and are staged over several days.
The Muskoka River X: a 24-hour race over 130 kilometres (81 mi) of lakes and rivers in Ontario, Canada. The course includes 20 portages. Paddlers must carry expedition gear such as shelters and emergency rations. Classes include canoe (single and tandem), kayak, and stand up paddle board.