The Iditarod Trail Sled Dog Race is an annual event held in early March that travels 1000 miles (1600 km) from Willow to Nome, Alaska, with a ceremonial start in Anchorage. The trail runs up Rainy Pass and through the Alaska Range into the sparsely populated interior, down the frozen Yukon River to Unalakleet on the Bering Sea, and then along the shore of Norton Sound to Nome. The Iditarod is regarded as a symbolic link to the early history of the state and is connected to many traditions commemorating the legacy of dog mushing including the 1925 serum run to Nome that transported diphtheria antitoxin by dog sled relay. Read more here and here. Click here to download the CoastView app and explore the coastal section of the trail.