California · Rock climbing · Santa Margarita

Hwy 166/Silly Rock

7 sport climbing routes in California.

Is Hwy 166/Silly Rock open right now?

Alert in the area

The Forest Service lists 3 alerts for Los Padres National Forest.

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

Best time to visit Hwy 166/Silly Rock

Best months: Year-round. 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

    63° / 41°

    8 wet

  2. Feb

    62° / 42°

    8 wet

  3. Mar

    65° / 44°

    8 wet

  4. Apr

    68° / 45°

    5 wet

  5. May

    70° / 48°

    2 wet

  6. Jun

    75° / 50°

    1 wet

  7. Jul

    77° / 53°

    0 wet

  8. Aug

    78° / 54°

    1 wet

  9. Sep

    78° / 52°

    1 wet

  10. Oct

    75° / 49°

    3 wet

  11. Nov

    68° / 44°

    5 wet

  12. Dec

    61° / 39°

    8 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Twitchell Dam, CA, 15.1 mi away at 582 ft. The station sits about 1,300 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hwy 166/Silly Rock is a climbing area in the Santa Lucia Ranger District of Los Padres National Forest in California, managed by the Forest Service. The name comes from the highway and the Silly Rock climbing spot, and it sits in a cluster of bouldering and wall areas. The weather here is mild year-round. Typical averages from a nearby weather station at Twitchell Dam show the warmest stretch from June through September, with highs around 75 to 78°F and almost no rain. Winter runs cooler, with highs in the low 60s and about eight wet days a month from December through March. Several climbing areas lie close by. Big Rocks is just 0.2 miles away, and Doom Wall, Mr. Lees Greater Hong Kong and the Sea of Love Wall are each about 0.6 miles off. For a walk, Gifford is roughly 2.6 miles away.

Keep exploring — more climbs worth the drive

Grime Dog WallPhoto: Sergei Gussev, CC BY 3.0 (via Wikimedia Commons)

Grime Dog Wall

~54 min drive

Grime Dog Wall in California has 6 routes with 5 difficulty grades, offering bouldering and sport climbing.

ChlorissaPhoto: hakkun, CC BY-SA 3.0 (via Wikimedia Commons)

Chlorissa

~59 min drive

Chlorissa is a California climbing area with 10 routes on 7 difficulty grades.

P-WallPhoto: hakkun, CC BY-SA 3.0 (via Wikimedia Commons)

P-Wall

~59 min drive

P-Wall in California has 39 climbing routes across 16 difficulty grades.

Hidden GullyPhoto: hakkun, CC BY-SA 3.0 (via Wikimedia Commons)

Hidden Gully

~60 min drive

Hidden Gully in California has 6 routes across 6 grades, offering mixed, sport, and trad climbing.

Cabrillo PeakPhoto: Mike Baird from Morro Bay, USA, CC BY 2.0 (via Wikimedia Commons)

Cabrillo Peak

~1h 13m drive

Cabrillo Peak in California has 12 climbing routes with 11 difficulty grades.

Rock LandPhoto: Mike Baird from Morro Bay, USA, CC BY 2.0 (via Wikimedia Commons)

Rock Land

~1h 13m drive

Rock Land in California has 13 routes across 9 grades with mixed, sport, and trad climbing.

Morro Bay HarborPhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

Morro Bay Harbor

~1h 18m drive

Morro Bay Harbor, California climbing area with 2 routes.

Breakwater BoulderPhoto: vonguard, CC BY-SA 2.0 (via Flickr)

Breakwater Boulder

~1h 18m drive

Breakwater Boulder in California has 6 bouldering routes across 5 grades.

Kelly's HillPhoto: NewMillenniumMusic, CC BY-SA 3.0 (via Wikimedia Commons)

Kelly's Hill

~1h 18m drive

Kelly's Hill in California has 8 bouldering routes with 6 difficulty grades.

Top of the WorldPhoto: DieselDemon, CC BY 2.0 (via Flickr)

Top of the World

~1h 18m drive

Top of the World in California has 21 bouldering routes across 8 grades.