Diablo Summit Stomp
Race facts
- Start time
- 8:15 AM PDT
- Distances
- 30K, Half Marathon, 10K, 5K, Remote Runner
- Entry fee
- from $82.31
- Terrain
- Trail
- Organizer
- Brazen Racing
- Registration
- Open
From the official race website, checked 2026-10-15. Official page
External Event
Distance
3.1–13.1 mi
Pace
All paces
Terrain
Trail
Difficulty
Beginner-friendly
About this run
The Diablo Summit Stomp is a trail running event set in Walnut Creek, California, on Saturday, October 17, 2026. Participants can choose from multiple trail distances, including a 5K, 10K, a half marathon (21.1K), and a 30K. The event is designed to be accessible for both novice trail runners and seasoned athletes, with walkers and hikers welcome in all distances. This event is hosted by Brazen Racing, known for its trail running events. The courses are situated on trails with some hills, offering a scenic running experience. Age group awards are presented to the top three finishers in five-year categories, adding a competitive element for those seeking recognition. Runners should be aware that registration fees vary by distance, with the 5K being the most affordable option and the 30K being the highest. The event also offers a "Remote Runner" option for those who wish to participate virtually. Registration closes shortly before the event date, so early sign-up is recommended.
Who it's for
This event is suitable for trail runners of all levels, from beginners to experienced athletes, due to its range of distances and beginner-friendly trail design. Walkers and hikers are also welcome.
What to expect
- All courses are on trails with some hills.
- Walkers and hikers are welcome in all distances.
- Age group awards will be given to the top 3 finishers in 5-year categories.
- Check the official registration page for packet pickup details.
- Arrive with ample time before your specific start time, as there are staggered starts for different distances.
- Consider the terrain and elevation when choosing your gear and pacing strategy.
Good to know
- The event is organized by Brazen Racing.
- Age group awards are provided.
- A 'Remote Runner' option is available for virtual participation.
Typical conditions
For events around October 2026 in Walnut Creek, United States: Typical autumn conditions in this region — conditions can change quickly; confirm race-day guidance on the official page.
How to prepare
Trail events reward time on uneven surfaces and hills. Practice footing and bring the shoes and hydration the organizer recommends — details vary by race.
Find races near youGetting there
This event is listed in Walnut Creek, United States. Confirm the exact start venue, parking, and transit options on the official registration page.
Frequently asked questions
What distances are offered at the Diablo Summit Stomp 2026?+
The Diablo Summit Stomp 2026 offers a 5K, 10K, Half Marathon (21.1K), and a 30K. There is also a Remote Runner option.
When and where is the Diablo Summit Stomp 2026?+
The event takes place on Saturday, October 17, 2026, at 1700 Castle Rock Road, Walnut Creek, CA, United States.
What is the terrain like?+
All courses are on trails and include some hills.
Are walkers and hikers welcome?+
Yes, walkers and hikers are welcome in all distances.
Are there awards?+
Age group awards will be awarded to the top 3 finishers in 5-year categories.
How do I register?+
Registration can be completed through the official Race Roster page: https://raceroster.com/events/2026/114667/diablo-summit-stomp-2026
When does registration close?+
Registration closes approximately 2 days and 6 hours before the event.
Who organizes the event?+
The event is organized by Brazen Racing.
Registration is handled by the official event organizer
Know a local group? Host a community run in Walnut Creek
