Come along on a hike on the Idaho Centennial Trail, linking up the desert to the Sawtooths to connect Jeanne's first and second section hikes of the ICT. Explore the transition from road walking the desert to approaching the snow topped Sawtooth mountains in the spring. The Idaho Centennial Trail is a trail that traverses the state of Idaho from the border with Nevada in the south nearly to the Canadian border in the north. Along the way, it travels through deserts and mountains, along roads and trails.