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Spartan Trail - San Jose Half Marathon & 10K

Top tags:

Stunning scenery

Friendly atmosphere

Incredible crowds

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Journey to the mythical Mount Diablo to brave the beating Californian sun in this epic Spartan trail race. Those who rise to the occasion will choose between a 10k or half marathon and battle for glory against the hills and rugged woodland trails of the awe-inspiring 30,000 acre Diablo Grande Ranch.

Review summary

1 Review
  • Course
  • Organisation
  • Atmosphere


Peter k
"My first trail half-marathon. Enjoyed it a lot. Wonderful open hills, great..."
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How to enter the Spartan Trail - San Jose Half Marathon & 10K

  1. Half Marathon

    Run 13.1mi
    Event passed
  2. 10K

    Run 10km
    Event passed
  3. Preferred Parking

    Event passed
  4. Festival Passes

    Event passed

Training Plans by Let's Do This - Spartan Trail - San Jose Half Marathon & 10K

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Spartan Trail - San Jose Half Marathon & 10K routes

Diablo Grande, an epic, 30,000-acre ranch and nature resort just 30 minutes outside of Modesto, plays host to this trail running event that would get even the most seasoned of trail junkies excited.

Runners will tackle this course under the heat of the Californian sun, knowing that with every footstep, they are joining the ranks of those who have traversed this ancient savannah before them, adding to the history and mystery of the location under the watchful eye of Mount Diablo. The course covers expansive woodland trails and climbs long hills, demanding the respect of the runners that choose to tackle this incredible trail challenge.

Relax, recharge and celebrate your success in the Spartan Village, or head to nearby Modesto or San Francisco for the incredible cultural experience.

Event Details

What’s Included
  • Spartan Trail Finisher Medal
  • Spartan Trail Finisher Shirt
  • Free professional photos
  • Bananas
  • Cold can of FitAid
  • Prize money for 1st, 2nd, & 3rd M/F
  • 3 Top Finishers in each age group will earn a unique Top Finisher Medal
  • Merch discount, parking services, bag drop (incl. in Fees)
Raceday Logistics


06:30am: Registration opens - registration fee includes parking and bag check

08:00am: Half Marathon start time

08:15am: 10K start time

Please arrive an hour and a half before race time to ensure plenty of time for registration

Festival Passes:

One festival pass is included with each Trail entry. Additional passes may be purchased online for $20 or $25 in cash on the day.

Festival passes include a merch discount card, finish line viewing, proximity to vendor tents, and hot food for sale.

Kit List
  • Performance gear is recommended - not cotton.
  • Trail shoes
  • Sunscreen
  • Hydration packs, energy gels, or energy bars are recommended for during the race

Spectators are encouraged to come along to cheer racers across the finish line from the Spartan Festival. Festival passes are available online, or on the day for $25 paid in cash.


As a Spartan Race volunteer, you will help the racers and spectators to have an epic race day. A big AROO for all volunteers as you will have a unique race experience in all that is Spartan:

Sign up here to be a volunteer

Frequently Asked Questions

What are included in the fees for registration?
Fees include racer insurance, parking services, bag drop, and a merch discount.
What will I receive prior to race day?
Via email, you will receive a confirmation email, important race documents and race updates. All other items (e.g. registration packets, bib numbers, finisher shirts, medals etc) will be picked up on race day.
I can no longer make the event, what are the options I have?
Spartan Race will allow you to defer your registration. You have until 30 days until after your event to defer the registration to a new event. From then, you have 90 days after the event to sign up for a new event (note, the event does not need to occur within the 90 days). You can also defer your entrance to a different person. Please see event website for more details.
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Spartan Trail - San Jose Half Marathon & 10K weather forecast

Mostly cloudy throughout the day.

Predicted highs
Predicted lows
IconLight breeze possible, up to 6mph

Meet the organizer


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Spartan are ranked #75 in the UK out of 564 organizers

Spartan is a leader in the sport of obstacle racing, offering open heats for all fitness levels, as well as competitive and elite heats for those with something more to prove. The first of its kind to feature timing and global rankings, Spartan provides a proving ground for beginner and professional obstacle racers looking to test themselves in new ways across the world.

Spartan Trail - San Jose Half Marathon & 10K reviews

4 out of 5 stars

  • Course
  • Organisation
  • Atmosphere

Reasons people recommend this event

Stunning scenery

Friendly atmosphere

Incredible crowds

  • P

    Peter k

    Did the Half Marathon in 2020

    My first trail half-marathon. Enjoyed it a lot. Wonderful open hills, great views, running along ridge lines. The hills on this course are brutal....did not know that going in. The course is 75% hill ascents or descents, and 25% rolling flats. Fun, great scenery, but be ready!