Personal recorded Interviews with past and present guides of the Wilderness Leadership School were used to identify four Important factors in a successful guided wilderness trail. Using postal questionnaires, guides and members of the Wilderness Leadership School were asked to rank nine trail scenarios. The technique of conjoint analysis yielded the relative importance, as perceived by the guides and trialists, of each of the four factors. It was shown that the most important attribute for both groups of respondents was how the trails interacted with one another. Next in importance was an increase in awareness, by the trialists of the if interdependence environment. This was followed by the personality of the guide and finally signs of modern man's impact in the wilderness area. There was an important difference in percept f on between the guides and the trails; the trails firsts placed more emphasis on the group interact ion and wilderness on an increase in awareness. There were also differences in perception between the different category of guides and trail fists. of' activities and related experiences relative to a successful trail are included in the report.