It’s Monday, and Iditarod sled dog teams are heading into their second full day of racing after the official start yesterday in Willow. From there they mushed west to the Yentna checkpoint about 50 miles into the race, on to Skwentna at about 80 miles, and the front-of-the-pack teams are already heading up and up and up into the Alaska Range, toward the mountainous checkpoint of Rainy Pass. We hear about the rookies in the race, a clip from Quince Mountain on what it's like to be the first openly trans Iditarod competitor, and Aliy Zirkle tells us about one of her leaders, Sparky.