The "Rural-Urban Link" cross-disciplinary group brought together a dozen PSDR4 projectsfrom all over France, which were interested in rural areas in their relationship with urban areas. Its aim was to identify in regional projects the signals of innovation and social experimentation specific to the urban-rural interface. Our collective has organised exchanges between projects on our approaches in seminars, colloquia and a series of webinars. The group has been able to capitalise on a series of research results relating to the relocation of agricultural production, the measurement of well-being, the governance of agri-urban areas and the implementation of environmental policies.