Following the July 2026 wildfires, many areas are closed, particularly in the Trois Pignons forest Learn more

Contribute to Boolder BETA

August 2026: The Boolder team is short-staffed and has little time to respond to messages and process contributions. You may not receive a reply from us for some time, or at all.

Thank you for your understanding.

Mapping

Go to an area and take pictures of the missing boulders with your phone.

Report a mistake

Report a mistake on an existing problem or circuit.

For Developers

Contribute to the source code of our apps: Ruby on Rails, iPhone and Android.