Contra Costa Air Quality

If you like riding your bike and getting free stuff, then the 511CC Summer Bike Challenge is for you! Available in Concord, Martinez, Pleasant Hill, Walnut Creek, Oakley and Brentwood, the Challenge is open to all ages, is fun and is completely free.

Participating is easy: Download a printable Challenge Card and start exploring your hometown by bike. Every time you visit a destination, you check off a square. To pick up free stuff, just ride your bike to events we’ve got planned through August 9th. See where we’ll be next with our Free Stuff & Events calendar.

BONUS: If you register your participation at 511cc.org/go, you’ll earn an extra gift you can pick up at any ‘Free Stuff’ event!

Ready to get started? Visit the Summer Bike Challenge Page.