Lost Keys Bouldering
Lost Keys Bouldering is a bouldering area in California with 6 routes.
Photo: fekaylius, CC BY-SA 2.0 (via Flickr)- 6 routes
- V3 – V7-8
- Bouldering
Best time to visit Lost Keys Bouldering
Best months: April–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
55° / 41°
14 wet
Feb
55° / 40°
14 wet
Mar
58° / 41°
13 wet
Apr
62° / 43°
10 wet
May
67° / 47°
7 wet
Jun
75° / 52°
3 wet
Jul
81° / 58°
1 wet
Aug
81° / 59°
1 wet
Sep
79° / 57°
2 wet
Oct
71° / 52°
6 wet
Nov
60° / 44°
11 wet
Dec
54° / 40°
15 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Skyline Ridge Preserve, CA, 7.7 mi away at 2,270 ft. The station sits about 600 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Lost Keys Bouldering is a bouldering area in Sanborn County Park, on county land in California. It sits among a cluster of climbing spots, with Clamshell Boulder, Lower Indian Rock and Indian Rock all about 0.1 mile away. The area is managed by the county, and the boulders here are the main draw. The climbing is all bouldering, with six routes spread across the V3 to V7 range. The easiest is Little Lost Keys Traverse at V3, and the hardest is Lost and Vicious at V7-8. Lost Keys Traverse, a V6, was first climbed by Jeremy Meigs. Summer is the driest and warmest time to visit. Typical averages from a nearby weather station show July and August highs around 81°F with only about one wet day a month, while winter brings highs in the mid-50s and rain on roughly 14 days a month. That station sits about 600 feet lower than the boulders, so temperatures on the rock run a little cooler. The Castle Rock Trail is 0.3 mile away, and the Skyline Trail and Summit Rock Loop Trail are both about 0.7 mile off. For paddling, the San Lorenzo River is roughly 9 miles away.
Keep exploring — more climbs worth the drive
Photo: fekaylius, CC BY-SA 2.0 (via Flickr)Clamshell Boulder
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