California · 10K · 50K · 5K
Diablo Trails Challenge
Diablo Trails Challenge is a 10K, 50K, 5K, BBQ ticket and half marathon event held in Walnut Creek, California. Its next confirmed date is Saturday, April 3, 2027.
- Race day
- April 3, 2027
- Location
- Walnut Creek, CA
Race details
- Date
- Saturday, April 3, 2027
- Location
- Walnut Creek, California
- Distances
- 10K, 50K, 5K, BBQ ticket, HALF MARATHON, Hiker Half Marathon, REMOTE RUNNER
- Course
- 2492 ft gain
- Registration
- raceroster.com
Registration, course & weather
- Registration status
- Open
- Entry fee
- Listed fee for the longest distance, $159.17 (from raceroster.com, checked October 18, 2026)
- Start time
- 6:30 AM PDT
- Course profile — Half Marathon
- Loop course; Trail surface; 2492 ft gain (estimated from third-party elevation data)
- Course profile — 50K
- Loop course; Trail surface; 8246 ft gain (estimated from third-party elevation data)
About the Diablo Trails Challenge
Diablo Trails Challenge 2027 in Walnut Creek, CA.
More half marathons in California
Coming up next, by confirmed date.
-
Dia De Los Muertos Half Marathon & 5K Run/Walk (Bakersfield)Bakersfield, CAHalf Marathon5K2 Mile Speed Walk
More races in Walnut Creek
More upcoming races in California
Keep exploring
- All races in California
- 5Ks in California 436 upcoming races
- 10Ks in California 298 upcoming races
- Half Marathons in California 190 upcoming races
- Marathons in California 39 upcoming races
- 5Ks in the United States 6,000 upcoming races
- 10Ks in the United States 2,572 upcoming races
- Half Marathons in the United States 1,668 upcoming races
- Spring Half Marathons
- April Half Marathons
- April races in California
- Half Marathons in Arizona 49 upcoming races
- Half Marathons in Nevada 35 upcoming races
- Half Marathons in Oregon 26 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Diablo Trails Challenge: common questions
- When is the Diablo Trails Challenge?
- The next confirmed date is Saturday, April 3, 2027.
- Where is the Diablo Trails Challenge held?
- In Walnut Creek, California.
- What distances does the Diablo Trails Challenge offer?
- 10K, 50K, 5K, BBQ ticket, HALF MARATHON, Hiker Half Marathon and REMOTE RUNNER.
- How do I register for the Diablo Trails Challenge?
- Registration is handled by the organiser at raceroster.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Diablo Trails Challenge?
- Yes — registration is open. Listed fee for the longest distance, $159.17 (from raceroster.com, checked October 18, 2026).
- What time does the Diablo Trails Challenge start?
- 6:30 AM PDT.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.