The 2019 C40 World Mayors Summit in Copenhagen

October 9, 2019 - October 12, 2019 Copenhagen

Please visit the official Summit website here for more information and updates.

October 9th-12th*

C40 mayors and deputy mayors, city delegates, climate experts, influencers, business leaders committed to take climate actions, innovators, change makers, citizens.

The C40 World Mayors Summit will feature innovative events, plenary sessions, breakout sessions, press conferences and cultural activities. 


The C40 World Mayors Summit is C40’s milestone event, serving as a unique forum for member cities to present the innovative actions they have taken to reduce greenhouse gas emissions and improve climate resilience; influence decision makers - from fellow mayors to CEOs and national leaders - to take the bold and urgent action needed to keep global temperature rise to below 1.5 °C; and inspire participants and citizens to take climate action in their own lives. 

Over the past decade, C40 has convened six Mayors Summits, hosted by London (2005), New York (2007), Seoul (2009), Sao Paulo (2011), Johannesburg (2014) and Mexico City (2016). Each C40 Mayors Summit has provided unique opportunities for the mayors of the world’s great cities to showcase their climate leadership on the global stage.  

With its agenda setting programme, and inspiring set of speakers, the C40 Mayors Summit is a unique global event. Previous C40 Summits have made headlines around the world by publishing groundbreaking research, showcasing cutting edge innovation from cities and launching new partnerships to promote creative urban solutions to climate change.

Copenhagen is a true pioneer in creating the sustainable, healthy and liveable cities of the future. The C40 World Mayors Summit in Copenhagen will be the first to truly bring the citizens of the city into the Summit.


*October 10–11, 2019: Main Summit and City Business Forum
October 9 & 12, 2019: Side events, citizens engagements, business forum, media opportunities