Seasonal migration to Sunbelt locales in recreational vehicles (RVs) has emerged as a major form of cyclical movement among Americans and Canadians. Using Phoenix, Arizona, as a case study, this paper addresses three questions. Who participates in this lifestyle? What are their geographical and temporal patterns of migration? What are the distinguishing characteristics of RV resort communities? Results highlight that older Americans and Canadians are defining new lifestyles and forms of retirement living based on seasonal movement in RVs.