The Douro Verde Half Marathon is an endurance event held along the Douro River in Ribadouro, Portugal, organized by Clube Náutico de Ribadouro with support from local municipalities and running groups. The event aims to promote physical activity, health, and quality of life. Participants can choose between an individual half marathon, a relay option for teams, or a walk, allowing both competitive runners and recreational participants to experience the scenic riverside and green valleys of the region.