The Quebec City Ice Canoe Race is an exciting winter event that takes place on the frozen St. Lawrence River. Teams of four paddlers and one steersman race in traditional canoes made of wood and covered in ice. The race is a thrilling test of strength, skill, and
From Wikipedia
Originally a means of winter transport between the islands and shores of the Saint Lawrence River, ice canoeing is now a sport. Crews of five athletes alternately push their canoe across the ice on the frozen parts of the river, and paddle in a river with currents of four knots, tides of over 15 feet, and ice blocks weighing a few tonnes blown by the wind. Shoes with bolts screwed to the bottom are worn to keep their traction on the ice.