Steve House is a world renowned climber, mountain guide, and Patagonia Ambassador, widely regarded for his light-and-fast style. He has published articles in a number of periodicals, and he is the author of Beyond the Mountain (Patagonia Books, 2009). He lives in Ridgway, CO. Scott Johnston, who grew up in Boulder, CO, has ski raced on a national and international level and is an avid climber. He currently coaches several of the nation’s top cross country skiers, and climbs, establishing local climbing routes in and around his home town of Mazama, WA, in the North Cascades, where he lives. Kílian Jornet is a professional sky runner, trail runner, ski mountaineer and long-distance runner. He is a six-time champion of the long-distance running Skyrunner World Series and has won some of the most prestigious ultramarathons, including the Ultra-Trail du Mont-Blanc, Grand Raid, the Western States Endurance Run and the Hardrock Hundred Mile Endurance Run. Jornet holds the fastest known time for the ascent and descent of Matterhorn, Mont Blanc, Denali and Everest.