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For over 40 years, Save Mount Diablo has worked tirelessly to preserve and increase the open space on and around Mount Diablo. In that time, their efforts have taken us from 6,788 acres of open space to over 100,000 acres of open space on and around the mountain!

With distances suitable for everyone from those hitting the trails for the first time to experienced ultra-runners, the Diablo Trails Challenge was created to help celebrate and support these achievements. A portion of all entry fees will go to Save Mount Diablo to help them continue preserving open space and trails for all of us to enjoy.

Registration fees

50K

Price changes in 8 months 2 hours
    1. $115.00
      Now registering Apr 30 – Feb 16
      Register
    2. $120.00
      Feb 17 – Mar 18
    3. $125.00
      Mar 19 – Apr 10

HALF MARATHON

Price changes in 8 months 2 hours
    1. $74.00
      Now registering Apr 30 – Feb 16
      Register
    2. $79.00
      Feb 17 – Mar 18
    3. $84.00
      Mar 19 – Apr 10

10K

Price changes in 8 months 2 hours
    1. $53.00
      Now registering Apr 30 – Feb 16
      Register
    2. $58.00
      Feb 17 – Mar 18
    3. $63.00
      Mar 19 – Apr 10

5K

Price changes in 8 months 2 hours
    1. $48.00
      Now registering Apr 30 – Feb 16
      Register
    2. $53.00
      Feb 17 – Mar 18
    3. $58.00
      Mar 19 – Apr 10

REMOTE RUNNER

Price changes in 9 months 2 days
    1. $40.00
      Now registering Apr 30 – Mar 18
      Register
    2. $45.00
      Mar 19 – Apr 10

BBQ ticket

Registration closes in 9 months 24 days
  • BBQ lunch plate from Slow Hand BBQ

    1. $10.00
      Now registering Apr 30 – Apr 10
      Register

Event Schedule

  • April 11 6:30 AM PDT - 50K RACE START

  • April 11 8:30 AM PDT - HALF MARATHON RACE START

  • April 11 9:00 AM PDT - 10K RACE START

  • April 11 9:30 AM PDT - 5K RACE START

Contact Information

Event Location

1700 Castle Rock Road, Walnut Creek, CA, United States

Click here to view map