Noyes Slough is a secondary channel of the Chena River contained entirely within the city limits of Fairbanks, Alaska. It is approximately 7 miles (11 km) long and separates the Garden Island district of Fairbanks from the rest of the town. During the summer, the slough is used by canoeists and waterfowl. In the winter, the slough freezes and is used by cross-country skiers, snowshoers, and mushers. It forms part of the route for the annual Open North American Sled Dog Championship and the Iron Dog snowmobile race, each of which end in downtown Fairbanks.