Stomp The Summit of Mount Diablo!

** Online registration closes at 4:00 pm today (Friday). Race day registration will be available, 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. Depending on the weather, all distances may include mud and creek crossings!

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). 


Early Start: 7:45 am

Early start is for those hiking the 30K or half marathon. Those starting early are not eligible for age group or overall awards.

30K: 8:15 am

Half Marathon: 8:30 am

10K: 9:00 am

5K: 9:15 am


Want to run with us, but can't make it in person?