With the continued push by organizations such as the Centers for Disease Control and Prevention and the World Health Organization to build healthy K-12 campuses, it is important to find ways to prepare preservice physical education teachers to successfully contribute to these whole-school models. This article shares the first-hand experience of an undergraduate student who took on the role of physical activity champion at a university campus. The health and physical education program at the university became the first college campus to adopt the Daily Mile as a whole-campus physical activity initiative. The initiative was used to give an undergraduate student first-hand experience as a physical activity leader. This article shares the joys and challenges faced in this role and reflects on the usefulness of the process to prepare for a future role as a physical education teacher.