This study looks at the role of hiking in the development and the identity of a French region. Both rural and agricultural, Brittany saw a reorganisation of its territory during the 1970s, partly due to activities such as hiking. By becoming a political focus, the activity contributed to making paths, only previously used for field labour, a tool for territorial development. It also rejuvenated Brittany’s regional identity as it explored a forgotten heritage. The course of action adopted aimed to bring new populations, particularly urban ones, to rural areas. Behind the attention focused on paths, as an essential requirement for hiking, lay a concern for environmental and social sustainability with effects on lifestyles, tourism, and the shaping of a region in transition.