Ken Rideout is the fastest marathoner in the world over fifty and a former prison guard, Wall Street trader, and opiate addict. Since getting sober more than a decade ago, he has won some of the world's toughest races, including, at age fifty-two, the Gobi March--a 155-mile, self-supported race across the sweltering Gobi Desert in Mongolia--and a few months later, the Masters Marathon World Championships. In addition to his many running victories, he has completed more than ten Ironman triathlons. In 2018, Ken founded capital solutions firm Camrock Advisors after a long career in finance working for such firms as Cantor Fitzgerald, Natixis, and Credit Agricole. He lives in Nashville with his wife, Shelby, and their four children.