Join Challenge16 Sign up and start register your biked kilometers. For every 16 participants, one new tree is planted! Just log in if already member.

Challenge16.com

Why join Challenge16

What it can do for you and what you can do for the Earth.

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Have a quick overlook of the features you will need.

Make your voice heard

Put pressure on politicians at COP16 in Mexico.

Challenge16 is a worldwide biking challenge aiming at making you and the world healthier.

The idea is simple: join challenge16, use your bike in everyday movements and register your kilometers. In return, we plant new trees!

Every time 16 new participants get on board, we’ll plant a tree, and the more you bike the more trees we plant!

To sum up, by joining this challenge, you:
-    Plant new trees
-    Reduce CO2
-    Get in shape
-    Make a difference for the environment right now

Join now and invite all your friends!