Main Rock
Main Rock in California has 7 climbing routes with mixed, sport, and trad styles.
- 7 routes
- 5.7 – 5.13c
- Sport · Mixed · Trad
Best time to visit Main 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.
Jan
57° / 42°
Feb
59° / 42°
Mar
59° / 42°
Apr
60° / 43°
May
62° / 45°
Jun
66° / 46°
Jul
65° / 48°
Aug
67° / 50°
Sep
67° / 48°
Oct
66° / 47°
Nov
61° / 44°
Dec
57° / 42°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Ft Ross, CA, 4.9 mi away at 112 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Main Rock is a climbing area in Sonoma Coast State Park in California, managed by State Park and Recreation. It sits within the state park's land, and Sea Crag, another climbing area, lies just 0.4 miles away. The area offers a range of climbing styles, with seven routes in total. Three are sport routes, two are mixed, and two are trad. Grades run from 5.7 up to 5.13c, with the hardest route, Jury Duty, a mixed climb at 5.13c. The Sandbagger and Crack Wall are both trad routes at 5.7 and 5.8, and Wide Crack is a mixed route at 5.10b. For comfortable weather, late summer into early fall is the warmest stretch. Typical averages from the nearby Ft Ross weather station show highs around 67°F in August and September, with lows near 50°F. Winter is cooler, with highs in the upper 50s and lows around 42°F. Nearby, the Russian Gulch Trail and Sea to Sky Trail are both within about 2 miles, and Russian Gulch Creek offers paddling about 1.5 miles away. Super Slab, another climbing area, is about 2.5 miles off.
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