The fourth edition of the Cities Mission Conference 2025 will be held in Vilnius, Lithuania on 6-8 May 2025 with the theme “Harnessing City Successes: Advancing Climate Action for 2030”, to spotlight the progress and ambition of Mission Cities and their partners as they strive to achieve climate neutrality by 2030. The EU Green Capital 2025 will welcome invitation-only attendees to the event. Organised by the European Commission and the Mission Platform, the conference will bring together political representatives and city practitioners to celebrate the Mission’s considerable progress after three years, share achievements and experiences, and inspire all those as they continue their hard work towards climate neutrality.