ABSTRACT. Participatory approaches are needed to ensure learning processes and to incorporate lessons learned during the implementation of a project. This is particularly important when the aim is to improve farm sustainability considering changes in knowledge and skills, natural resources management and networking. This paper describes the Participatory Impact Pathways Analysis (PIPA) implemented within the participatory action research project ?Coinnovating for the sustainable development of livestock family-farming systems in Rocha, Uruguay?, which involved stakeholders for planning, monitoring and evaluating of the project?s progress. Six workshops were implemented during 2012 - 2015 to enhance the project?s actions. Participatory methods were used to adapt PIPA to the Uruguayan culture. During 2013 an interinstitutional network was established, a shared vision of expected project results was defined, as well as impact pathways, goals and activities to achieve them. During the 2014- 2015 workshops, reflections and suggestions led in turn to new or modified activities. This process contributed to confidence and commitment building, improving the quality of the established relationships and strengthening networking to enhance the dissemination of the project findings. As a result of the learning process, and inspired in the project?s methodological and technological results, one stakeholder organization established a project for another region. The last workshop focused on a participatory evaluation of the whole project, demonstrating that a successful innovation process took place. This Uruguayan case showed that within the coinnovation framework, the PIPA approach nurtured the creation of a common space for social learning and innovation, providing a useful instrument for rural development.