The sport in which you use a canoe and paddle down a river is known as canoeing or kayaking. This water sport involves navigating a canoe or kayak using a double-bladed paddle to propel through various waterways. Canoeing can be practiced as a recreational activity or competitive sport, offering various disciplines such as sprint racing, slalom, and marathon events. Paddlers must develop strength, coordination, and technique to successfully navigate different water conditions.