Summit Rock Half Marathon, 10K & 5K

DEC
12
2026
Trail races at Sanborn Regional Park on December 12, 2026: 5K, 10K and half marathon through redwoods with chip timing and finisher medals.
Sat 12 Dec 2026
Half Marathon 10 kilometers 5 kilometers

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Summit Rock Half Marathon, 10K & 5K - Saratoga, CA

The event on December 12, 2026 takes place at Sanborn Regional Park in the Santa Cruz Mountains, just outside Silicon Valley. Races run through redwood groves and pine forests on single track trails with uphill sections that ascend to peaks offering panoramic views. The course includes flat and downhill sections as well as steeper ascents and descents.

Distances offered:

  • Half marathon
  • 10K
  • 5K

All races are professionally timed with electronic chip timing. Finishers receive custom finisher medals. Hikers and walkers are welcome to participate. Free photos are provided by volunteer photographers.

The half marathon is part of the Brazen Ultra Half Series, a set of events characterized by longer distances on some courses and significant ascents and descents on varied trail surfaces. Race information includes course details, bib pickup, directions, shirts and awards, and results. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
10 km
10k
5 km

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