A - Boulder (Left Of Trail)
A - Boulder (Left Of Trail) in California has 6 bouldering routes across 4 grades.
- 6 routes
- V0 – V3
- Bouldering
Is A - Boulder (Left Of Trail) open right now?
Alert in the area
The Forest Service lists 7 alerts for Angeles National Forest.
Rincon-Redbox Road (2N24) Closure
Agency alert covering Angeles National Forest · Order 05-01-26-13 · USFS · Angeles National Forest
Fire Danger Level Elevated to "Very High"
Agency alert covering Angeles National Forest · USFS · Angeles National Forest
San Gabriel Canyon OHV Area Prohibitions
Agency alert covering Angeles National Forest · Order 05-01-26-09 · USFS · Angeles National Forest
San Dimas Experimental Forest Closure
Agency alert covering Angeles National Forest · USFS · Angeles National Forest
Eaton Fire Area Closure
Agency alert covering Angeles National Forest · Order 05-01-26-04 · USFS · Angeles National Forest
As of · Source: USFS · Angeles National Forest. Agencies don't list every closure — check before you go.
Best time to visit A - Boulder (Left Of Trail)
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.
Jan
56° / 38°
7 wet
Feb
55° / 37°
8 wet
Mar
59° / 39°
7 wet
Apr
63° / 42°
4 wet
May
70° / 48°
3 wet
Jun
79° / 58°
1 wet
Jul
84° / 64°
1 wet
Aug
85° / 64°
1 wet
Sep
81° / 59°
1 wet
Oct
72° / 51°
3 wet
Nov
63° / 43°
4 wet
Dec
55° / 37°
7 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Wilson Cbs, CA, 8.3 mi away at 5,710 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
A is a climbing area in the San Gabriel Mountains National Monument Ranger District of Angeles National Forest in California, managed by the Forest Service. It sits to the left of the trail, and its name points to its location rather than a single peak or route. Several climbing areas cluster within about 0.1 mile of this spot, so it makes sense to plan a visit around the cluster as a whole. The most comfortable stretch for a day is late spring and early fall. Typical averages from the nearby Mt Wilson weather station, which sits at a similar elevation, run from highs around 70°F in May to about 72°F in October, with only a few wet days in each of those months. B1 Boulder and Main Area are both about 0.1 mile away, and Mt. Hillyer is a hike 0.3 mile off. For an overnight stay, Bandido Group Campground is about 0.7 mile away.
Keep exploring — more climbs worth the drive
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Freezer Burn Wall
~14 min drive
Freezer Burn Wall in California has 7 sport climbing routes with difficulty grades from easy to hard.
Eagles Roost Buttress
~14 min drive
6 sport climbing routes on Eagles Roost Buttress in California.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Mushroom Boulder
~14 min drive
Mushroom Boulder in California has 8 sport climbing routes across 7 difficulty grades.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Stream Wall
~14 min drive
Stream Wall in California has 9 sport climbing routes across 8 difficulty grades.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Ramblin' Wall
~14 min drive
Ramblin' Wall in California has 5 sport climbing routes.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Waterfall Wall
~14 min drive
Waterfall Wall in California has 10 sport climbing routes across 8 difficulty grades.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)Williamson Rock
~14 min drive
Williamson Rock in California has 59 sport climbing routes across 18 difficulty grades.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)London Wall
~14 min drive
London Wall in California has 15 sport climbing routes across 9 difficulty grades.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)South Area
~18 min drive
South Area in California has 9 climbing routes across 8 difficulty grades, offering sport and trad styles.
Photo: RuggyBearLA, CC BY 2.0 (via Flickr)VD (Very Direct) Wall
~18 min drive
VD (Very Direct) Wall in California has 15 climbing routes across 9 grades.

