The growing demand for outdoor adventure tourism activities, and the rapid growth in associated industry supply, means we need an improved understanding of outdoor adventure tourists. The paper considers the characteristics and motives of outdoor adventure tourists, as well as the influence of experience, age and gender on their motives. This is based, firstly, on a critical review of the relatively much more extensive literature on outdoor adventure activity participants for insights into the character and motives of outdoor adventure tourists. The paper also focuses, secondly, on an original case study of mountaineer tourists in Chamonix, France. Results from the case study of mountaineer tourists are evaluated against the research themes and gaps identified from the review of literature on outdoor adventure activity participants, including outdoor adventure tourists. It is shown how outdoor adventure tourists are a diverse group. Motivational similarities and differences exist between these tourists and their outdoor recreational counterparts. Experience, age and gender influence the motives and motivational differences among outdoor adventure activity participants. It is noted that there is considerable scope for further research on outdoor adventure tourists, including mountaineer tourists, and potential new research directions are identified for the specific themes examined in the paper.