California · Rock climbing · Mammoth Lakes

College Boulder

College Boulder in California has 8 bouldering routes across 7 grades.

8 routes
V0 – V6
Bouldering

Is College Boulder open right now?

Alert in the area

The Forest Service lists 4 alerts for Inyo National Forest.

As of · Source: USFS · Inyo National Forest. Agencies don't list every closure — check before you go.

Best time to visit College Boulder

Best months: May–September. 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

    41° / 17°

  2. Feb

    41° / 18°

  3. Mar

    45° / 22°

  4. Apr

    51° / 27°

  5. May

    60° / 35°

  6. Jun

    70° / 42°

  7. Jul

    78° / 49°

  8. Aug

    77° / 47°

  9. Sep

    71° / 40°

  10. Oct

    61° / 30°

  11. Nov

    49° / 23°

  12. Dec

    41° / 17°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mammoth Lakes Rs, CA, 0.7 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

College Boulder is a bouldering area in the Mammoth Ranger District of Inyo National Forest in California, managed by the Forest Service. It sits among a cluster of climbing and hiking spots in the Mammoth Lakes area, with Student Boulder just 0.1 mile away and Mammoth Creek Road 0.2 mile off. The climbing here is all bouldering, with eight routes spread across the area. Grades run from V0- to V6, so there is something for climbers of all levels. Ochre Tears is the hardest route at V6, and Sailor Ban-Ki-Moon and Unnamed Face are the easiest at V0-. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Mammoth Lakes show July highs around 78°F with lows near 49°F, while winter highs stay around 41°F. New Shady Rest Campground and Pine Glen are both within a mile, and Mammoth Rock Trail is about 0.6 mile away. Hot Creek, roughly 6.7 miles off, offers more paddling.

Routes (8)

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Sector FPhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

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Sector APhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

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