See Climathon | Climate Action by a Community of Changemakers (climate-kic.org)

As centres of scientific, technological, cultural and social identity and innovation, cities, towns and regions are also the places and spaces where opportunities for creating change can have the greatest impact. It is evident that a growing number of citizens want to take part in creating this change.
Climathon provides the platform for citizens and decision-makers to work together to create a better future.
Climathon is orchestrated by EIT Climate-KIC and run independently by organisations with knowledge of local ecosystems in hundreds of cities, towns and regions across the globe.
It is our mission to catalyse systemic change and to create climate-resilient communities. Our Theory of Change is focused on empowering people to change cities, towns and regions – through exploration, experimentation and demonstration – to enable viable alternatives at scale.