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Riders of all ages are welcome to join in this event! Riders can compete on any type of non-motorized bicycle, including tandems, uni-cycles and hand powered vehicles. We are also happy to announce the Second Annual "Ride Your Age" Division - Level the playing field for 50+ age and gender! Ride Mount Diablo in the number of minutes as you are old and you will win a Save Mount Diablo jersey and get on the podium.

All proceeds benefit Save Mount Diablo’s land conservation efforts to create a national park-sized wilderness in your backyard for you, wildlife and future generations to enjoy.

*Riders ages 12 and under must be accompanied by an adult rider. All minors under the age of 18 may not sign up online. Minors must be registered through the registration form on this website and mail payment to Save Mount Diablo.

Sunday, October 4, 2015 - Start gun fired at 8:30 am.

The waves will start 5 minutes apart with the 'faster' cyclists in the first wave. Participants can request a wave based on their expected finish time, and on a first signed up-first served basis. Wave assignment is at the full discretion of Save Mount Diablo. 

Start, Registration/Bib pick up all at the Athenian School, 2100 Mt. Diablo Scenic Boulevard. Parking only at Monte Vista High School.


Online registration is now closed (September 30th, 11:59pm PST)! This year we have a limited number of bibs available for same day registration in Waves 3, 4, and 5. Day of registration is $100. Arrive early to claim yours! Same day registrants will be able to check their results online later in the week. For up to date information on the evet, like us on Facebook!

Not available in XS

MDC shirt sketch

2015 Jersey
The art is in! Fellow cyclist and Pixar Artist Matt Nolte is creating an exclusive design for Save Mount Diablo Challenge shirts and jerseys again! But you don't want to miss them. You must place your order by 11:59 pm (PST) 9/15/15 to be guaranteed a shirt.


Save Mount Diablo Challenge 2015 jersey designs are coming soon and will be based on the sketch above! The Save Mount Diablo jersey is available now through our Jakroo storefront. 15% of the proceeds go to Save Mount Diablo to help preserve, defend and restore the Diablo wilderness for all to enjoy. Jerseys can be ordered after the event date and will be recieved by mail.



This year, you can choose to fundraise to expand parks while winning yourself some great prizes like a set of Zipp Wheels. Your donations will be doubled thanks to a generous donors matching fund of $8,500 from the Nathan Ohrbach Foundation! We hope you'll donate to preserve more lands for you and future generations to enjoy.

Fundraise now


Want some fundraising tips? We're here to help! Check out our tips and email us if you'd like a little more help.

Previous Prizes & Awards

  • This year we have the Ride Your Age Award thanks to Encina Veterinary Hospital. If you can finish the Mount Diablo Challenge in the number of minutes you are old or less, you'll win the special Save Mount Diablo jersey (pictured above)!
  • All riders reaching the summit in less than 1 hour receive a special “One Hour” T-Shirt. 
  • Our complete list of Prizes and Awards is being updated regularly so check back often!

Directions & Parking:
Parking is available at Monte Vista High School only. Please do not park in the neighborhood.  We can host this event only if we keep our neighbors happy! 

From San Francisco or Oakland:  Take Highway 24 East to Highway 680 South.  Take 680 to Danville Exit on Stone Valley Rd., head east, then follow the signs.

From San Jose (South Bay):
  Follow Highway 680 to Danville.  Exit on Stone Valley Rd., head east, then follow the signs.


Thanks to all of our generous sponsors, volunteers, park rangers, the Mount Diablo Amateur Radio Club, and the Contra Costa County Sheriff's department. Without your efforts we could not make this event possible!


  Credits | Legal StatementCopyright 2012 Save Mount Diablo. Designed by Alison Martin. Funded by Clif Bar.