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CA Technologies
Mount Diablo Challenge
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The Save Mount Diablo Challenge, presented by
CA Technologies, is an 11.2 mile timed bike ride, starting at Athenian School in Danville and climbing up Southgate Road 3,249 feet to the summit of Mount Diablo. 1,000 cycling enthusiasts compete and prizes are awarded for several categories in a ceremony at the summit with food and beverages for all.  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.

Thanks to all of our generous sponsors, volunteers, park rangers, and the Contra Costa County Sheriff's department. Without them we could not host this event.

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.


WAVE 1 IS FULL. All other Waves are still avilable. To be the first to hear details like when registration opens, join Mount Diablo Challenge on Facebook! Registration is first come, first served. If you're interetsed in Wave 2 sign up fast. Or you can make a donation to Save Mount Diablo, get Wave 1 & VIC parking click here!

(until 11:59 pm PST 9/7/15)

Late Reg
(beginning 9/8/15)
$75 $90

Register for the Saver Mount Diablo Challenge

Riders of all ages are welcome. 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. Riders can compete on any type of non-motorized bicycle, including tandems, uni-cycles and hand powered vehicles.

The full course is an 11.2 mile bicycle road ride, elevation gain 3,249 feet. Start is at Athenian School in Danville, finish at the Summit of Mount Diablo. Mount Diablo State Park will be closed to all outside traffic for the duration of the event.  Riders will be assisted by State Park escorts during descent.



MDC shirt sketch
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) 9/7/15 to be guaranteed a shirt. Order Now!


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! 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. 
  • Top finishers, male and female, in several categories. 
  • Fastest team
  • Individuals and the team that raises the most funds for Save Mount Diablo.

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 cyclists for riding safely, all volunteers for helping to give cyclists a splendid time, thanks to sponsors for making the ride possible, and the State Park Rangers, CoCo Sheriff's Search and Rescue volunteers and Reserves, and the Mount Diablo Amatuer Radio Club volunteers for their support!



Read an article from the very first Mount Diablo Challenge.

"Thank you Mount Diablo Challenge for putting on a great event. The event helped me attain a goal I thought I would never reach."

I did the challenge for my first time in 2009 and I was happy with my results (1:21:51) since I was cycling for 3 months and was overweight. After the first event, I made a goal for the following ...year to lose a lot of weight, get "fit" and shoot for a sub 1hr finish. I trained hard for a whole year and I lost 30 lbs in the process. I was so excited to get under an hour (according to my cycle computer and the ride timer at the summit); I shaved off almost 22 minutes off last year's time. I was relieved and in a world of hurt. I had no idea my accomplishment would inspire family and friends to make positive changes in their lives. Some plan to sign up for the 30th anniversary Mount Diablo Challenge. See you next year!" - Francis Ilao

"Thank you for an awesome experience" - Northsiders Cycling

"I was the oxygen-depleted maniac screaming 'T-shirt! T-shirt! T-shirt!' Thanks so much for an awesome event again." - Chris Dawson

"Thank you Save Mount Diablo for hosting this great bike ride. A classy event, as always." - Lance Larsen

"What a great first time experience for my son! 1:00:45! He really enjoyed meeting some of the other riders and I really enjoyed being at the summit to greet all of you! So many smiles! See you next year!" - Karen Shackleton

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