Adam Chase, sometimes known as the "Shoemelier" or "Imelda of Trail Running," has tested more than 1,000 pairs of running shoes, mostly in Boulder, Colorado, where he was raised and, when not running, practices law. He is the President of the American Trail Running Association, Colorado Running Hall of Fame inductee, and father of two sons. Adam has run more than 150 marathons and ultras (winning more than 20) and also competed internationally as a sponsored athlete in adventure and multisport races.

He is the co-author of The Ultimate Guide to Trail Running and four trail running guides (with Nancy Hobbs) and has served as a writer and/or editor for Running Times, Triathlete, Competitor, Men's Journal, Trail Runner, UltraRunning , Elevation Outdoors, and many other sports publications.

Nancy Hobbs is the founder and executive director of the American Trail Running Association. She has been running trails and directing running events since the mid-1980s, and her articles and photographs have been published in such magazines as Trail Runner and Runner's World. She's worked in administration with the Olympic Committee and the Triple Crown of Running. She was a key player in getting the United States involved in the World Mountain Running scene, chairs the USA Track and Field Mountain Ultra Trail Council and sits on the World Mountain Running Association Council.