California · Rock climbing · Yosemite National Park

Sloth Boulder

5 bouldering routes at Sloth Boulder in California, 4 difficulty grades.

Photo: Joe Parks from Berkeley, CA, CC BY 2.0 (via Wikimedia Commons)

5 routes

V0+ – V3

Bouldering

Is Sloth Boulder open right now?

No closures listed

The National Park Service lists no closures for Yosemite National Park.

As of Oct 23, 7:30 pm PDT · Source: NPS · Yosemite National Park. Agencies don't list every closure — check before you go.

Best time to visit Sloth Boulder

Best months: March–June and September–November. 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
48° / 29°
9 wet
Feb
51° / 30°
9 wet
Mar
57° / 33°
10 wet
Apr
63° / 38°
8 wet
May
70° / 45°
6 wet
Jun
80° / 51°
3 wet
Jul
89° / 57°
1 wet
Aug
89° / 57°
1 wet
Sep
83° / 51°
2 wet
Oct
71° / 41°
3 wet
Nov
56° / 32°
6 wet
Dec
46° / 28°
8 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Yosemite Park Hq, CA, 0.7 mi away at 4,018 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Sloth Boulder is a bouldering area in Yosemite National Park, California, managed by the National Park Service. It sits among a cluster of climbing spots, with Bridwell Boulder and Swan Slab Proper each about 0.1 mile away, and Camp 4 West and the Yosemite Falls Trail both about 0.2 mile off. The area is a compact, close-together set of boulders rather than a long route, and it works well as a short stop for climbers already in the park. The boulders here are all rated on the V scale, with five routes in total. The easiest is Hand Traverse at V0+, and the hardest is The Sloth at V3. Leaf Eater is V1. The climbing is bouldering only, so there is no rope or anchor to set up. The most comfortable months for a visit are late spring and early fall. Typical averages from a nearby weather station show May highs around 70°F and October highs around 71°F, while July and August average highs near 89°F. A fee is charged for climbing in the park. Lower Pines Campground and North Pines Campground are both about 1.9 miles away for overnight stays.