Summit Rock Half Marathon
Where the 2026 race is now
- RegistrationOpen when last checked August 14, 2026Check registration
- Race daySaturday, December 12, 2026
- ResultsPosted here as soon as the timer has them
- Race day
- Dec 12, 2026 Saturday
- Distance
- 13.1 mi Half marathon
- Entry
- Open? As of August 14
- Boston qualifier
- n/a
- Live tracking
- Not yet Shown here race week
- Latest results
- None yet After race day
Quick facts
- Genuine mountain trail half with a long climb to the top of Sanborn County Park.
- Mixed surface of fire road, technical singletrack and short paved connectors.
- Small fields, roughly 110 to 150 half marathon finishers.
- Suited to runners comfortable hiking climbs rather than chasing a flat time.
Course
A mix of fire road, tight singletrack and short paved sections through Sanborn County Park's redwood groves, with a sustained climb to the park's high point and views over the valley. The descents are technical enough that downhill running skill matters as much as fitness.
Race-day weather
Mid December in the Santa Cruz Mountains is cool and often damp, with filtered light under the canopy and temperatures in the 40s and 50s. Recent rain leaves roots and clay slick on the steeper singletrack.
About the Summit Rock Half Marathon
One of Brazen Racing's toughest halves, held in the Santa Cruz Mountains a short drive from San Jose. Fields hover near 110 to 150 finishers, and the organizers openly tell first time trail runners to hike the climbs rather than race them.
Past Summit Rock Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, December 12, 2026 | Upcoming | — |
Summit Rock Half Marathon FAQ
When is the Summit Rock Half Marathon?
The 2026 Summit Rock Half Marathon is on Saturday, December 12, 2026.
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