The Interreg Europe INERTWASTE project held its first Transnational Learning Journey (TLJ) in Pamplona on 14-15 November organised by ACR+ Government of Navarra. Stakeholders from diverse sectors and regions involved in inert waste management, including public authorities, private companies, research centres, and environmental consultancies, shared insights and challenges. The TLJ focused on regulatory frameworks for inert and inorganic waste, exploring perspectives from Europe, Spain (particularly Navarra), France, Denmark, and Slovenia. Despite differences, shared practices emerged, and the event showcased the necessity of such gatherings for collaborative problem-solving. For more details, visit the event page.