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Diablo Summit Stomp 30K Half Marathon/10K/5K

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November 4, 2017 (Saturday)
Half Marathon, 10 K, 5 K, Other
Castle Rock Regional Park
Walnut Creek, California
Click to go to the web site for the Diablo Summit Stomp 30K Half Marathon/10K/5K in Walnut Creek, California

Join in the adventure!

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).


30K: 7:45am

Half Marathon: 8:00 am

10K: 8:20 am

5K: 8:40 am

Cutoff time for the half marathon is 4.5 hours.

Event Start Location
Castle Rock Staging Area, Mount Diablo, Walnut Creek.

Course Description
The 5K, 10K, half marathon and 30K courses are on dirt trails in Castle Rock and Mount Diablo State Park.

Timing / Results

All races will be professionally chip timed.

Post Race Activities
Plenty of food and It's-It ice cream at the finish area!

Scroll down for Event Results, News, Videos, Reviews, and more. If you can't find what you're looking for, please visit the event's web site

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Marathon Race Day Tips

Once you have put in your mileage and properly trained, hopefully you will be ready to turn in that PR on race day (or be a first time finisher). Here are some tips that should help you on race day.
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Plantar Fasciitis

Experienced as heel pain when you take your first steps after getting out of bed or after sitting for a long period of time, plantar fasciitis is a running injury most frequently caused by an abnormal motion of the foot or too-tight calf muscles.
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How to Avoid The Porta Potty During a Race

We've all seen it and most of us have done it ... 30 minutes (or less) into a race athletes are already looking for a port potty. The good news is that it doesn't have to be that way. The secret is a proper hydration plan before the gun goes off, and here's how you do it.
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Did you compete in this event?
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Still using GU, PowerGel or Clif SHOT?
See why athletes are making the switch to e-Gel, the only Electrolyte Energy Gel. Get 230 mg Sodium, 85 mg Potassium and more complex carbs than any other gel.
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Clubs and Groups
 Looking for a club or team to help keep you motivated?
 Club or Team Name   City  State   More Info 
 3M Track Club  Oakland CA club info
 A Running Experience Club  Long Beach CA club info
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 Aggie Running Club  Saratoga CA club info
 Alex Van Dyke Track Club  Sacramento CA club info
 Alexanders Light'n' Express  San Deigo CA club info
 Aptos Track Club  Aptos CA club info
 ARC Run Club  Los Feliz CA club info
 Athletes for Athletes  Modesto CA club info
 Athletic Performance Willow Glen Runners  San Jose CA club info
 B.C.U. Youth Track & Field Club  Carson CA club info
 Bakersfield Grayhounds  Bakersfield CA club info
 Bakersfield Yellow Jackets  Bakersfield CA club info
 Bay Area Roadrunners Track Club  Sunnyvale CA club info
 Bay Area Ultra Runners  San Jose CA club info
 Beach Runners  Long Beach CA club info
This is a partial list of the 282 Running clubs and teams in California and approximately 10,000 clubs in the U.S. To find a club or team in your area click here.

: If you belong to a team or club that is not list on Race360 we will be happy to list it for free. Refer to our Club Services page.

Retailers (near this event)
 If you need last minute shoes, clothing, energy gel, etc., try one of these local running stores:
 Store City  State   Distance   More Info 
 Forward Motion  Walnut Creek CA 1.8 Miles store info
 Athletic Outpost  Walnut Creek CA 1.8 Miles store info
 Fleet Feet Sports  Pleasant Hill CA 3.7 Miles store info
 Forward Motion  Danville CA 7.4 Miles store info
 Transition Sports  Oakland CA 12.1 Miles store info
 TranSports  Oakland CA 12.7 Miles store info
 Lafoot Plus  Berkeley CA 12.9 Miles store info
 Lombardi Sports  San Francisco CA 23.1 Miles store info
 Fleet Feet Sports  San Francisco CA 23.8 Miles store info
 MetroSport  San Francisco CA 23.8 Miles store info
 HOYS SPORTS  San Francisco CA 24.9 Miles store info
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 On The Run  San Francisco CA 27.3 Miles store info
 Arch Rival  Mill Valley CA 28.1 Miles store info
 Arch Rival  Greenbrae CA 29.1 Miles store info
 Napa Running Company  Napa CA 29.8 Miles store info
 Fleet Feet Sports  San Anselmo CA 30 Miles store info
 Fleet Feet Vacaville  Vacaville CA 31.4 Miles store info
 Red Lantern Cycles  Menlo Park CA 32.6 Miles store info
 The Runners High  Menlo Park CA 32.6 Miles store info
 Sportissimo  Palo Alto CA 33.7 Miles store info
 MetroSport  Palo Alto CA 33.7 Miles store info
 ZombieRunner  Palo Alto CA 35 Miles store info
 Sports Basement  Sunnyvale CA 38 Miles store info
 On Your Mark  Los Altos CA 38.4 Miles store info
 Fleet Feet Stockton  Stockton CA 38.7 Miles store info
 The Running Zone  Elk Grove CA 46.8 Miles store info
 Heart and Sole Sports  Santa Rosa CA 52 Miles store info
 Fleet Feet Sports  Santa Rosa CA 52 Miles store info
NOTE: If you own a retail store that should be on this list, please use our dealer application for more information on becoming a Race360 partner.
 Bold indicates Authorized Crank Sports Dealers

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