California · Rock climbing · Saratoga

Hash Rock

Hash Rock is a California climbing area with 9 bouldering routes.

9 routes
V0 – V5
Bouldering

Best time to visit Hash Rock

Best months: April–November. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    55° / 41°

    14 wet

  2. Feb

    55° / 40°

    14 wet

  3. Mar

    58° / 41°

    13 wet

  4. Apr

    62° / 43°

    10 wet

  5. May

    67° / 47°

    7 wet

  6. Jun

    75° / 52°

    3 wet

  7. Jul

    81° / 58°

    1 wet

  8. Aug

    81° / 59°

    1 wet

  9. Sep

    79° / 57°

    2 wet

  10. Oct

    71° / 52°

    6 wet

  11. Nov

    60° / 44°

    11 wet

  12. Dec

    54° / 40°

    15 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Skyline Ridge Preserve, CA, 7.6 mi away at 2,270 ft. The station sits about 800 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hash Rock is a climbing area within Sanborn County Park in California, on land managed by the county. It sits alongside several other named climbing areas in the park, including Sanborn County Park (Indian Rock Side), Lower Indian Rock and Indian Rock, all about 0.1 mile away. The driest stretch runs from June through September, when typical highs reach the low to mid 80s and wet days drop to one or two a month, according to averages from a nearby weather station. Winter is cooler and wetter, with typical highs around 55°F and rain on about 14 days a month. The Castle Rock Trail starts about 0.2 mile away, and the Skyline Trail and Summit Rock Loop Trail are both about 0.6 mile off. Paddlers can head to the San Lorenzo River, roughly 9 miles away.

Routes (9)

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Sanborn County Park (Indian Rock Side)Photo: arnybo, CC BY-SA 2.0 (via Flickr)

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