28 Oct 2021 - 29 Oct 2021


20 Oct 2021 - 20 Oct 2021

Sustainable reactivation and greater climate ambition from cities

Climate impacts are affecting the whole world, we know that we have to face the climatic challenges that our city is facing, and we must do it now, the change is now!

Climathon is a global movement that is organized locally; a city-based program that offers a clear path to climate action.

The core of the Climathon program is an annual ideathon that takes place in hundreds of other cities on many continents and time zones at the same time. This event seeks that all, from each citizen, understand what challenges we face and how we can solve them.

During the ideath span of 12 to 72 hours, a diverse group of participants will come together to collaborate on forward-thinking ideas that address local climate challenges.

Get involved and join a global community of thousands of people who want to act now and rethink the cities we live in and the future we want as citizens.

Registration opens soon

Previous Years Climathon

Find out what happened last time

Facts & Figures

145 cities

Uniting the world's cities

6000+ participants

Join a global movement

600+ ideas

Make your local idea count

Meet the organisers

Contact the organiser




Want the global view?

Climathon global

Thanks to our global partners