This PhD research aims to improve our understanding regarding the typical training practices (i.e. what type of training is being completed?), health problems (i.e. which injuries and illnesses occur most frequently and what are the associated risk factors?) and athletic identity (i.e. how do health problems influence an individual’s athletic identity?) of adolescent distance runners. An interdisciplinary research design will be used, in order to generate an integrated understanding of these themes. This research will form a distinct contribution to the existing literature by improving our knowledge of how to manage the training practices and health problems of adolescent distance runners, with applicability to coaches, practitioners, athletes and academics.