California · Rock climbing · Mammoth Lakes

5th Boulder

5th Boulder in California has 5 bouldering routes with 4 difficulty grades.

5 routes
V0 – V1
Bouldering

Is 5th 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 5th 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, 2.4 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

5th Boulder is a bouldering area in the Mammoth Ranger District of Inyo National Forest in California, on city land. It sits among a cluster of bouldering spots, with Geothermal Boulders and 7th Boulder each about 0.1 mile away. The climbing here is all bouldering, with five routes ranging from V0- to V1. The easiest are Problem E at V0- and Problem D at V0, while Problem A and Problem C are both V1. The routes are short and sit close together, so the area works well for a quick session rather than a long day on the rocks. 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. Indian Caves Vis is a hike about 1.3 miles away, and Valentine Lake is about 1.6 miles off. Sherwin Creek campground is also about 1.6 miles away, and Pine Glen campground is about 2.2 miles away.

Routes (5)

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

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Sector CPhoto: 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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