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** Note: Online registration for Diablo Summit Stomp is closing at 4:00 pm on Friday (11/3).  If you don't get registered by then, you can still sign up at the park on race morning, starting at 6:45 am. **

All courses are on trails. While there are some hills, this event, like all Brazen Racing runs, is very friendly to first-time trail runners and experienced runners alike.

Walkers/hikers are welcome in all distances.

Age group awards will be awarded to the top 3 finishers in 5 year categories (smaller categories for the younger ages). 

Registration fees

5K Closed

    1. $48.00
      Apr 24 - Sep 18
    2. $53.00
      Sep 19 - Oct 16
    3. $58.00
      Oct 17 - Nov 3

5K No shirt Closed

-$5.00

    1. $43.00
      Apr 24 - Sep 18
    2. $48.00
      Sep 19 - Oct 16
    3. $53.00
      Oct 17 - Nov 3

10K Closed

    1. $53.00
      Apr 24 - Sep 18
    2. $58.00
      Sep 19 - Oct 16
    3. $63.00
      Oct 17 - Nov 3

10K No shirt Closed

-$5.00

    1. $48.00
      Apr 24 - Sep 18
    2. $53.00
      Sep 19 - Oct 16
    3. $58.00
      Oct 17 - Nov 3

Half Marathon Closed

    1. $74.00
      Apr 24 - Sep 18
    2. $79.00
      Sep 19 - Oct 16
    3. $84.00
      Oct 17 - Nov 3

Half Marathon No shirt Closed

-$5.00

    1. $69.00
      Apr 24 - Sep 18
    2. $74.00
      Sep 19 - Oct 16
    3. $79.00
      Oct 17 - Nov 3

30K Closed

    1. $79.00
      Apr 24 - Sep 18
    2. $84.00
      Sep 19 - Oct 16
    3. $89.00
      Oct 17 - Nov 3

30K No shirt Closed

-$5.00

    1. $74.00
      Apr 24 - Sep 18
    2. $79.00
      Sep 19 - Oct 16
    3. $84.00
      Oct 17 - Nov 3

Remote Runner Closed

    1. $40.00
      Jan 28 - Oct 16
    2. $45.00
      Oct 17 - Nov 3

Remote Runner No shirt Closed

-$5.00

    1. $35.00
      Jan 28 - Oct 16
    2. $40.00
      Oct 17 - Nov 3

Event Schedule

  • November 4 7:45 AM PDT - Early Half Start (for those walking the half marathon, planning to take longer than 3.5 hours)

  • November 4 8:15 AM PDT - 30K

  • November 4 8:30 AM PDT - Half Marathon

  • November 4 9:00 AM PDT - 10K

  • November 4 9:15 AM PDT - 5K

Contact Information

Event Location

Castle Rock Road, Walnut Creek, CA, United States

Click here to view map