This chapter outlines theoretical and research literature on self-talk in the context of endurance sports. Three strands of self-talk research on endurance sports are overviewed: descriptive research, research on self-talk antecedents, and research on the effects of self-talk. In particular, we show that learning to use self-talk can benefit endurance performance. We then suggest priorities for future research on self-talk in the context of endurance sports. Finally, research on the effects of self-talk is used to provide practical guidance on learning to use self-talk to benefit performance results.