In Spain, hiking is an activity that involves following paths, which may or may not be signposted, on foot, for sporting and cultural purposes. In the country as a whole, although with important regional variations, hiking has traditionally been linked to mountaineering and rambling clubs. However, at the beginning of the 1990s this activity became much more widely popular, reaching beyond the more limited sphere within which the pioneers of hiking in Spain had acted. Hiking stopped being just a sporting and cultural activity and also became a form of tourism and leisure, coinciding with the emergence and consolidation of what have become known as alternative forms of tourism. In this context of change, hiking tourism has gradually evolved over the years into a strategic option for development in many territories. This article presents the most important aspects of this transformation: the changes in the territorial model for the management of the paths on which the creation of hiking tourism products is based; the fact that in the design of routes more consideration is being given to the differential characteristics of tourist demand for hiking; the adaptation of the accommodation, restaurant facilities and the main specific services associated with it; and the emergence and engagement of new stakeholders in the processes of planning, distribution and communication of this activity.