The World Awheel places Americans’ engagement with the bicycle as a technology, sport, leisure activity, and means of transportation within a global framework. It contends that the bicycle changed the meaning of movement for Americans both within the nation and as they went abroad. It emphasizes the ways cycling was a transformative activity predicated on crossing frontiers and fashioning new subjectivities through the cyclist’s interaction with environments familiar and strange. Americans of all races, classes, and genders embraced the bicycle and in doing so expanded both their physical and cognitive horizons. It argues that the immense popularity of the bicycle created new understandings of the local, national, and global, while facilitating sometimes troubling interpretations of this newfound mobility’s relationship to race, class, and gender. Taken together, the research uses the bicycle to make clear the transnational and global connections forged by ordinary Americans prior to the Second World War.