This study identifies some characteristics of mountaineering visitors, climbers' perceptions of the mountain environment, and certain preferred management options affecting both the mountain environment and the mountaineer on Mt. McKinley and adjacent Alaska Range peaks. Approximately 360 registered climbers were asked to complete a 26-item questionnaire as they checked out at the ranger station in Talkeetna (Alaska). Of the climbers responding to the questionnaire, the average age was 32 years and over 90% were male. Climbers reported an average of 10 years mountaineering experience. Within the sample, 67% indicated that they made the summit or completed their route. The majority of the people (66%) were classified as independent climbers, while 32% were part of a guided party, and 2% were solo climbers. Forty-four percent of the climbers reported that trash was not evident on their routes and 4.7% thought trash levels on their climbing route was unacceptably high. In dealing with trash, 92% reported that they carried their trash out. While on their climbing route, 30% of the climbers reported that disposing of human waste was a problem. Solutions proposed by climbers included using more latrines and using crevasses to dispose of waste. Crowding was considered a problem for 32% of the climbers. A slight majority (57%) were against limiting the number of climbers. The study showed that trash, sanitation, and crowding are still within acceptable limits for most Mt. McKinley climbers. (KS)