Flintstone Rock
Flintstone Rock in California has 5 sport climbing routes across 4 difficulty grades.
Photo: @bastique, CC BY-SA 2.0 (via Flickr)- 5 routes
- 5.8 – 5.10c
- Sport
Best time to visit Flintstone Rock
Best months: February–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
54° / 42°
11 wet
Feb
55° / 42°
11 wet
Mar
58° / 43°
10 wet
Apr
62° / 44°
7 wet
May
68° / 49°
4 wet
Jun
76° / 55°
1 wet
Jul
82° / 62°
1 wet
Aug
83° / 61°
0 wet
Sep
80° / 60°
1 wet
Oct
72° / 54°
4 wet
Nov
60° / 46°
7 wet
Dec
53° / 41°
11 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Diablo Junction, CA, 3.1 mi away at 2,170 ft. The station sits about 1,300 ft higher than this place, so expect it a little warmer here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Flintstone Rock is a climbing area in Mount Diablo State Park in California, managed by State Park and Recreation. It sits among a cluster of other climbing spots, with Pine Canyon, The Rock of Ages and Mammoth Rock all about 0.1 mile away. The Rock of Ages and Deliverance Rock are also close by, so climbers can string several areas together in one visit. The climbing here is all sport, with five routes ranging from 5.8 to 5.10c. Pigeon Tunnel is the easiest at 5.8, and The Quarry is the hardest at 5.10c. Oona Kuma Direct and Yabba Dabba Dudes are both 5.10a, and Oona Kuma is 5.10b. For timing, late spring and early fall are the most comfortable. Typical averages from a nearby weather station at Mt Diablo Junction show May highs around 68°F and October highs around 72°F, while winter brings about 11 wet days a month. That station sits roughly 1,300 feet below the park's summit, so temperatures on the rock run cooler. Hikers can pair a climb with the Buckeye Ravine Trail, about 0.2 mile away, or the Castle Rock Trail and Shell Ridge Trail, each about 0.6 mile off. Paddlers will find Walnut Creek about 6 miles away.
Keep exploring — more climbs worth the drive
Photo: MARELBU, CC BY 3.0 (via Wikimedia Commons)Pine Canyon
~0 min drive
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Photo: @bastique, CC BY-SA 2.0 (via Flickr)The Rock of Ages
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Photo: @bastique, CC BY-SA 2.0 (via Flickr)Mammoth Rock
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Deliverance Rock in California has 6 sport climbing routes across 6 difficulty grades.
Photo: Dan Harrelson, CC BY 2.0 (via Flickr)Butt Rock
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Photo: Dan Harrelson, CC BY 2.0 (via Flickr)Middle Tier
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Middle Tier in California has 9 climbing routes across 7 grades, offering mixed and sport climbing.
Photo: Dan Harrelson, CC BY 2.0 (via Flickr)Lower Tier
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Photo: Tbo47, CC0 (via Wikimedia Commons)Pinnacle Rock
~26 min drive
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Photo: albategnius, CC BY-SA 2.0 (via Flickr)Cragmont Park
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Photo: kevin dooley, CC BY 2.0 (via Flickr)Berkeley
~27 min drive
Berkeley, California has 4 climbing routes with 3 difficulty grades.
