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San Jose Trail Challenge 2027 event logo
Sanborn County Park, Saratoga, CA / USA

SEP 25 / 2027

10K / HALF MARATHON / 50K

TYPE DE TERRAIN DE TRAIL

SOFT / SINGLE TRACK

SAISON

AUTUMN

TEMP MOYENNE

28ºC / 82ºF

ALTITUDE MOYENNE

420 Mts. / 1400 ft.

AEROPORT

SAN JOSE (SJC)
SAN FRANCISCO (SFO)

2027 REGISTRATION OPEN

San Jose Trail Challenge 2027

San Jose Trail Challenge takes place Saturday, September 25, 2027 at Sanborn County Park in Saratoga, California. Choose a 10K, half marathon or 50K trail race in the Santa Cruz Mountains. Registration is open through the official Spartan ticket page.

Sanborn County Park is home to well-groomed but steep and difficult trails, which makes for a challenging course for runners of all abilities.

Situated on the eastern slopes of the Santa Cruz Mountains and home to giant coastal redwood groves, the park is shaded and relatively temperate even in the hotter months, making it a local favorite for hikers, runners, and mountain bikers. Racers can expect big climbs and descents with good footing on flowy singletrack trails through dense forest.

2027 Race Schedule

  • 50K: 7:00 AM PDT
  • Half Marathon: 9:00 AM PDT
  • 10K: 11:00 AM PDT

Start times are those currently listed on the official registration page. Check the final 2027 runner guide for updates.

Arrival and Parking Information

The race venue is Sanborn County Park. The official registration listing also names West Valley College, 14000 Fruitvale Ave. Parking Lot 5, Saratoga, California, for arrival/parking information. Confirm 2027 parking, shuttle and venue access instructions in the final runner guide before traveling.

Prior-edition runner guides, equipment rules and course maps below are reference material, not confirmed 2027 race instructions. Historical results remain labeled by year.

Event details verified October 27, 2026 against the official 2027 registration listing.

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2027 Event Questions

PRIOR EDITION RUNNER GUIDE (REFERENCE ONLY)

The runner guide contains everything you need to know about the race. Please read it!

PRIOR EDITION RACE INFORMATION (REFERENCE)

Prior-edition equipment and cutoff information is shown for reference. Confirm 2027 requirements in the official runner guide when published.

Equipement obligatoire

● Bib number must be visible from the front during the entire race. Staff along the race course
MUST be able to read the number clearly.
● Chip timing tag must be worn for the duration of the race.
● One 500ml (17 oz) water carrying vessel (50k only)

Recommended Equipment

Some additional gear to consider:
● Water bottle, waist pack, soft flask holder or backpack with hydration system. Participants must
carry and dispose their trash at aid stations. Any runners caught littering will be subject to
immediate disqualification.
● Waterproof breathable warm gloves. Early morning temperatures can reach the low 40s
● Breathable warm jacket to protect you from low temperatures
● Tights with high Lycra content. Aside from protection from the cooler temperatures, tights will
keep you free from poison oak along the course.
● Running shoes with rugged traction
● Trekking poles are allowed.
● Short running gaiters to keep debris out is a great way to prevent blisters
● Multifunctional neck gaiter or buff which can double as a head cover during cooler temps
● Sunscreen
● Running hat and/or visor
● Eyewear: keep in mind that the race course goes through dark forest areas and sunny open lands
so proper eyewear is recommended
● A spare change of clothing in your drop bags
● Warm and dry clothes at the start/finish bag check

BÉNÉVOLE

Race for free, earn free merchandise, and be a part of our community.

Help us while setting up, during or after the race. Earn race credits to tackle any of our US events for free, and help make your fellow runners a better experience. Learn more on our volunteer page!

PRIOR EDITION THE COURSE (REFERENCE ONLY)

Course map and elevation profile for each distance.

Official Hydration Partner
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