Sonoma County Backroad Challenge

Saturday 19th May 2018

Penngrove Community Park: 11800 Main St., Penngrove, United States

Cycling, Metric century, Century


  • Cycling-36.52 Mile - Individuals & Team Registration
  • Metric Century - 65.74 Miles - Individuals & Team Registration
  • Century - 99.54 Miles - Individuals & Team Registration


The Rotary Club of Petaluma Sunrise invites you to join us for our annual Sonoma County Backroad Challenge.  Enjoy your choice of a challenging 36.52, 65.74 or 99.54-mile bike ride through beautiful Sonoma and Marin Counties.  

It has been said that the Backroad Challenge is the best way to spend a Saturday outside. It’s your chance to ride one of three epic Wine Country back road routes that will take your breath away and test your resolve. Get your buddies together, drag them over the Marshall Wall, draft behind them on Chileno Valley Road, wait until that perfect moment then swing out and beat them to that cold beer and BBQ at the Backroad Festival.….No one will be disappointed. Make this the year that you took the Backroad Challenge and let your legs determine that you’re worthy.


We will provide you with your essentials for the day such as; maps, light breakfast food (coffee, yogurt, granola, pastries, and the like), some goodies for the road (bars, etc.) and hydration for your bottles.


Join us after for the Backroad Festival at Penngrove Park will be in full swing when you finish your ride.  Enjoy a delicious BBQ chicken meal prepared by the Penngrove Social Firemen, live music, exhibits, and an extensive beer garden featuring several local craft breweries.   


All proceeds go towards The Petaluma Sunrise Foundation, a 501(c)(3) Charitable Foundation.  


For more information on the rides or on our cause we invite you to visit our website at


We look forward to seeing you out there!

Event details and schedule

Ride Information:

All courses begin at Penngrove Park where you’ll find check in, maps,  light breakfast food (coffee, yogurt, granola, pastries, and the like), some goodies for the road (bars, etc.) and hydration for your bottles.  No swag, t-shirt, beer glass or anything else to carry for now.  We’ll save that for the Festival. You’ll be good to go.

Note: The climb figures below were generated on Map My Ride

Century Ride

Metric Century

Half Metric

The back roads of Sonoma County can be rough, bumpy, pot hole-ridden, and narrow – we’ve done our best to utilize the best roads available.  You may be required to ride single file in some places.  Please abide by local traffic laws, stop at stop signs/signals, be aware of cars, share the road, and put your safety and the safety of your fellow riders as your highest priority – as it is ours – and most importantly HAVE FUN!


Organised by

Petaluma Sunrise Foundation

1345 Industrial Ave., Petaluma

Phone: 800-675-7750

Event Images