Organised by ICLEI Europe alongside Mission partner organisations, the event provides a structured space for cities to share experiences, explore emerging initiatives within the Mission and its platform, and engage in discussions on high‑priority challenges. Positioned between early implementation and the acceleration phase towards 2030, the conference supports cities in advancing their pathways to climate neutrality.

The 2026 edition will focus on four key areas: mobilising climate finance, strengthening multi‑level partnerships, accelerating implementation, and improving impact insights across the Mission. Through plenaries, thematic sessions, and networking opportunities, the conference aims to reinforce collaboration and provide practical support for systemic urban transformation. As the Cities Mission continues to evolve, this annual gathering remains a central moment for cities to connect, reflect on progress, and build the momentum needed to deliver climate‑neutral urban futures.