Research into the distance learning of languages is now established as a significant avenue of enquiry in language teaching, with evident research trajectories in several domains. This article selects and analyses significant areas of investigation in distance language learning and teaching to identify new and emerging gaps, along with research questions, methodologies and research tools. Taken together these define a research agenda focusing on theory, pedagogy, technology use, learner contributions, innovation and less commonly taught languages. Within those broad areas, the scope of proposed research tasks includes the distinctive features and practices of distance language teaching, task design for synchronous settings, mentoring, multimodal learning environments, the transfer of speaking skills, and learners' affective experiences. To conclude, a number of guidelines are given for future enquiry addressing the distinctive nature of research into distance language teaching and learning and the need for a rich evidence base in both theory and practice.