This month-long September challenge invites you to move 37 miles however you like—running, walking, or any other form of exercise—to support childhood cancer research and awareness. The number 37 holds special significance as the favorite of Sam, a young advocate who believed this "forgotten number" deserved recognition, much like the often-overlooked childhood cancers the Sam Day Foundation works to fight. Register today to participate, raise support for research, and join others in making a difference for kids with cancer.