California · Rock climbing · Running Springs

Upper Dinosaur Rock

Upper Dinosaur Rock in California has 3 climbing routes with bouldering pads and alpine no fixed protection.

3 routes
5.8 – 5.10b
Alpine · Bouldering

Is Upper Dinosaur Rock open right now?

Closure in the area

There's a closure order in Mountaintop Ranger District. It doesn't name Upper Dinosaur Rock, so check the source for the area it covers.

As of · Source: USFS · Mountaintop Ranger District. Agencies don't list every closure — check before you go.

Best time to visit Upper Dinosaur Rock

Best months: May–October. 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

    46° / 24°

    6 wet

  2. Feb

    46° / 24°

    6 wet

  3. Mar

    51° / 27°

    6 wet

  4. Apr

    57° / 31°

    4 wet

  5. May

    66° / 37°

    2 wet

  6. Jun

    75° / 43°

    1 wet

  7. Jul

    80° / 50°

    2 wet

  8. Aug

    79° / 49°

    3 wet

  9. Sep

    73° / 44°

    2 wet

  10. Oct

    63° / 35°

    2 wet

  11. Nov

    53° / 28°

    3 wet

  12. Dec

    46° / 24°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Big Bear Lake, CA, 9.3 mi away at 6,753 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Upper Dinosaur Rock is a climbing area in California's San Bernardino National Forest, within the Mountaintop Ranger District. The Forest Service manages the land. The area sits among several climbing neighbors. Upper Dinosaur Rock - North Face and Lower Dinosaur Rock - N. Face both lie about 0.1 mile away, and the Mill Peak Spur hike starts about 0.4 mile off. Arrowbear Lake, a fishing spot, is about half a mile away. The climbing here ranges from alpine routes to bouldering, with three routes listed. Solo Slab and La Cruz are both rated 5.8, and Disbarred is 5.10b. Summer is the warmest stretch. Typical averages from a nearby weather station at Big Bear Lake show July highs around 80°F with lows near 50°F, and the area sits about 330 feet higher than that station.

Routes (3)