Gary Cantrell, also known as Lazarus Lake, is an American ultramarathon runner and race director. He is best known for founding the Barkley Marathons, a notoriously difficult ultramarathon held in Tennessee. The race is famous for its challenging course and low finish rate, attracting elite runners from around the world. In addition to his work with the Barkley Marathons, Cantrell has participated in numerous ultramarathons and endurance events. He is recognized for his contributions to the ultrarunning community and has inspired many with his unique approach to long-distance running and race organization.