JACKY HUNT-BROERSMA is a professional athlete sponsored by Altra and Garmin, an endurance coach, mom of two, and cancer survivor. She lives in Gilbert, Arizona. Cindy Kuzmais a freelance writer, author, and podcaster; a regular contributor toRunner's World,Women's Running, and a wide variety of other sports, fitness, and health publications; and the coauthor ofRebound: Train Your Mind to Bounce Back Stronger From Sports Injuries. Cindy specializes in covering injury prevention and recovery, everyday athletes who accomplish extraordinary things, and the active community in her beloved Chicago, where winter forges deep bonds between those athletes brave enough to train through it. She has run 22 marathons--including seven in Boston--and she never gets tired of plotting her next breakthrough. Foreword writer:Mirna Valerio, a native of Brooklyn, New York, is a Spanish teacher, diversity practitioner, cross-country coach, ultrarunner, OCR enthusiast, and blogger. Valerio's blogs about all things running appear at Fat Girl Running and in Women's Running Magazine. Her story was featured in the Wall Street Journal and Runner's World and on NBC Nightly News.

Valerio is a global ambassador for Merrell, an ambassador for Skirt Sports, and an athlete for Swiftwick. She is married to Cito Nikiema, and together they have a basketball-loving teenage son, Rashid. She loves being in nature and frequently runs trails in the North Georgia mountains.