The study will test the independent and moderating effects of a multilevel intervention and the community environment on physical activity among rural residents. The multilevel intervention consists of community, interpersonal, and intrapersonal aspects. The community level intervention consists of community events. The interpersonal level intervention consists of walking group formation. The intrapersonal level intervention consists of cues provided by short message service messages (i.e., text messaging). A dose response relationship is expected in the intervention communities.