Despite a steady growth of mountaineering population, lured by many high peaks in Taiwan, leisure experiences of this segment have been empirically under-explored for decades. The study aimed at examining how mountaineers and hikers' involvement was related to their leisure satisfaction and subjective well-being. With a convenient sampling and a four-page questionnaire, the survey yielded 458 valid responses. The analysis showed a respondent profile of 33-year-old, college-educated, single male in northern Taiwan with a monthly income of NT$40,000 or less. The sample took high- and mid-range mountaineering 2.3 and 2.5 times, and hiking, 6.5 times, spending 7-12 days during the last six months with under 5 years of mountaineering experience and investing NT$5,001-15,000 a year in related equipment. Bivariate analyses found that (1) socio-psychological involvement (importance-pleasure in particular) and closer relation to leisure satisfaction that behavioral aspect; (2) both behavioral and socio-psychological involvements were more associated with negative affect than overall satisfaction and positive affect of subjective well-being; and (3) satisfaction with other life domains was positively related to overall life satisfaction and positive affect. Satisfaction with finances has the highest predicting power over life satisfaction, followed by satisfaction with work, health, family life, and leisure. Yet financial satisfaction failed to predict positive affect. Finally discussion and recommendations for leisure service and products providers and future research were made.